List of freshwater aquarium fish species

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A vast number of aquatic species have successfully adapted to live in the freshwater aquarium. This list gives some examples of the most common species found in home aquariums


Common name Taxonomy Life span Level of aggression About Image Size Remarks Temperature range Ph range
Angelfish 'Pterophyllum scalare several color varieties; this species is the common angelfish in the aquarium trade. Angelfish can grow up to fifteen centimetres (six inches), and therefore should be housed in a large aquarium. Angelfish should be kept alone, or kept with three or more. This is because that if two are kept together, the larger fish will pick on the smaller fish. Angelfish are not as hardy as other cichlids and should not be kept with small fish such as neon tetras. However, just the opposite is true: Angelfish should not be kept with fish that may nip and annoy it such as some large tetras. They are good fish for beginners but only if you pay attention to their tankmates and temperaments. They work well with other fish but should be kept in a school of 3 or more if you want more than 1.
Altum Angelfish Pterophyllum altum
Spotted Angelfish Pterophyllum leopoldi


Armored catfish including Aspidoras, Brochis, Callichthys, and Corydoras
Common name Taxonomy About Image Size Remarks Temperature range pH range
Brown-point shield skin longirostris Aspidoras fuscoguttatus Aspidoras fuscoguttatus.jpg 3.8 cm (1.5 in)[1] 22–25 °C (72–77 °F)[1] 5.5–6.8[1]
Aspidoras lakoi 4 cm (1.6 in)[2]
Loach catfish Aspidoras rochai 4 cm (1.6 in) maximum length[3] 21 - 25 degrees Celsius[3] 6.0-7.5[3]
Sixray corydoras, false corydoras Aspidoras pauciradiatus False cory 1.jpg 2.9 cm (1.1 in)[4] 73–82 °F (23–28 °C) 6.0-7.2[4]
Britski's catfish Brochis britskii 8.9 cm (3.5 in) Brochis is often synonymized with Corydoras.
Emerald catfish Brochis splendens Brochis splendens im Aquarium.jpg 10 cm (3.9 in) Brochis is often synonymized with Corydoras. 70–82 °F (21–28 °C) 5.8-8.0[5]
Hognosed brochis Brochis multiradiatus Fish at Louisville Zoo 025.jpg 6.6 cm (2.6 in) Brochis is often synonymized with Corydoras.
Cascarudo Callichthys callichthys Callichthys callichthys.JPG 20 cm (7.9 in)
Adolfo's catfish/corydoras Corydoras adolfoi Acuario.jpg 5.7 cm (2.2 in) 72–79 °F (22–26 °C) 6.0-7.0
Banded corydoras Scleromystax barbatus Schleromystax barbatus5015.jpg 10 cm (3.9 in)
Masked corydoras, bandit corydoras Corydoras metae Acuario.jpg 4.8 cm (1.9 in) 72–79 °F (22–26 °C) 6.0-7.0
Barred-tail corydoras Corydoras cochui 2.5 cm (0.98 in)
Blackstripe corydoras Corydoras bondi 4.7 cm (1.9 in)
Blacktop corydoras Corydoras acutus Corydoras acutus by Frank M. Greco.jpg 4.4 cm (1.7 in)
Blue corydoras Corydoras nattereri Corydoras nattereri.JPG 5.4 cm (2.1 in)
Bluespotted corydoras Corydoras melanistius 5.1 cm (2.0 in)
Bronze corydoras, Emerald green cory Corydoras aeneus Extremely common. Corydoras aeneus 2.jpg 6.35 cm (2.50 in) The albino strain of C. aeneus is common among aquarists. 77 °F to 82 ° (25 °C to 28 °C)
Caracha Corydoras atropersonatus 4.5 cm (1.8 in)
Ehrhardt's corydoras Corydoras ehrhardti 4.1 cm (1.6 in)
Evelyn's cory Corydoras evelynae 4 cm (1.6 in)
Corydoras geoffroy 7 cm (2.8 in)
Corydoras latus 5.2 cm (2.0 in)
Loxozonus cory Corydoras loxozonus 4.9 cm (1.9 in)
Corydoras nain Corydoras nanus 4.5 cm (1.8 in)
Long nosed arched cory Corydoras narcissus 6.5 cm (2.6 in)
Corydoras ornatus 4.9 cm (1.9 in)
Corydoras osteocarus 4 cm (1.6 in)
Corydoras polystictus 3.2 cm (1.3 in)
Scleromystax prionotos 5.3 cm (2.1 in)
Corydoras semiaquilus Corydoras semiaquilus 1.jpg 6.0 cm (2.4 in)
Corydoras septentrionalis 4.9 cm (1.9 in)
Corydoras simulatus 4.9 cm (1.9 in)
Corydoras undulatus 4.4 cm (1.7 in)
Dwarf corydoras Corydoras hastatus Corydoras hastatus.jpg 3.5 cm (1.4 in)
Elegant corydoras Corydoras elegans Corydoras elegans.jpg 5.1 cm (2.0 in)
False network catfish Corydoras sodalis 4.9 cm (1.9 in)
False spotted catfish Corydoras leucomelas Corydoras leucomelas.jpg 4.5 cm (1.8 in)
Gold laser cory Corydoras melanotaenia Corydoras sp. CW010.jpg 5.8 cm (2.3 in)
Guapore corydoras Corydoras guapore 4.1 cm (1.6 in)
Mosaic corydoras, reticulated corydoras Corydoras haraldschultzi Corydoras haraldschultzi aquarium.jpg 5.9 cm (2.3 in)[6]
Mosaic corydoras, reticulated corydoras Corydoras reticulatus 5.1–6.1 cm (2.0–2.4 in)
Panda corydoras Corydoras panda Corydoras panda 01.jpg 3.8–5.1 cm (1.5–2.0 in) 6.0-8.0[7]
Pastaza corydoras Corydoras pastazensis 6.4–7.1 cm (2.5–2.8 in)
Peppered corydoras, salt and pepper catfish Corydoras paleatus Corydoras paleatus by NiKo.jpg 5.1–7.6 cm (2.0–3.0 in)
Pink corydoras Corydoras axelrodi 4–5 cm (1.5–2 in)
Pygmy corydoras Corydoras pygmaeus Corydoras pygmaeus5333.jpg 2.5–3.3 cm (0.98–1.30 in)
Sailfin corydoras Scleromystax macropterus
Salt and pepper catfish/corydoras Corydoras habrosus Corydoras habrosus.png 2.5–3.6 cm (0.98–1.42 in)
Schwartz's catfish Corydoras schwartzi Corydoras schwartzi.jpg 3.8–5.1 cm (1.5–2.0 in)
Spotted corydoras, longnose corydoras Corydoras ambiacus 5.1–6.1 cm (2.0–2.4 in)
Sterba's corydoras Corydoras sterbai Corydoras sterbai.jpg 6.8 cm (2.7 in)[8]
Sychr's catfish Corydoras sychri
Tailspot corydoras Corydoras caudimaculatus 4–5 cm (1.5–2 in)
Threestripe corydoras, leopard catfish, false julii cory Corydoras trilineatus Corydoras trilineatus3.jpg 6.1 cm (2.4 in)[9]
Xingu corydoras Corydoras xinguensis 3.8–5.1 cm (1.5–2.0 in)
Julii corydoras Corydoras julii Corydoras julii.jpg 5.1–6.4 cm (2.0–2.5 in)
Flagtail catfish Dianema urostriatum
12.5 cm

(4.9 in)

Originated from the Amazon Basin. 77° – 82 °F

(25° – 28 °C)

Armored suckermouth catfish (plecos)
Common name Taxonomy Image Size Remarks Temperature range pH range
Bristlenose pleco, bushynose pleco Ancistrus spp. Bristlenose Catfish 700.jpg 13 cm (5 in)[10] The bristlenose genus has at least 59 identified species and many others yet to be named. Males and female both have long "bristles" on their nose, the males having distinctly longer ones. 72-84 F (20-27 C) |
Gold nugget pleco Baryancistrus spp. Baryancistrus-L018.jpg Many species of this fish exist, but are not yet officially identified; the three common aquarium species are known as L-018, L-081, and L-177. 77-86 F (25-30 C) |
Whiptail catfish Rineloricaria spp. Viola (Rineloricaria longicauda) 2.jpg 20 species
Twig catfish Farlowella spp. Farlowella arcus 3.jpg at least 20 species
Panaque Panaque spp. Panaque.JPG Several species of panaque are popular aquarium fish.
Pineapple pleco, orange cheek pleco Pseudorinelepis spp. Pineapplepleco.JPG four species
Common pleco, suckermouth catfish, Amazon sailfin catfish Pterygoplichthys pardalis Liposarcus pardalis.jpg 16 cm (6.3 in) One of the several fish sold under this name; there is also an albino variation.
Common pleco, suckermouth catfish Hypostomus punctatus SukermouthCatfish.jpg One of the several fish sold under this name.
Common pleco, suckermouth catfish Hypostomus plecostomus Pterygoplichthys pardalis 700.jpg 50 cm (20 in) One of the several fish sold under this name.
Leopard sailfin pleco, clown sailfin pleco Pterygoplichthys gibbiceps Sailfin-pleco.jpg Other related fish also share this common name.
Zebra pleco, L-046 Hypancistrus zebra Hypancistrus zebra4305.jpg 3-5 in One of the most popular Hypancistrus species.
Sailfin catfish Pterygoplichthys multiradiatus Liposarcus multiradiatus 01 ssj 20050321.jpg
Golden dwarf sucker, golden oto Macrotocinclus affinis Otocinclus affinis.JPG 5 cm (2 in) A peaceful algae eater. Keep in groups of 3 or more. 6+ being the preferred size.
Zebra dwarf sucker, zebra oto Otocinclus cocama Otocinclus cocama.jpg
Long-whiskered catfish
Common name Taxonomy Image Size Remarks Temperature range pH range
Bolt catfish Aguarunichthys torosus 35 cm (14 in)
Gold Zebra catfish Brachyplatystoma juruense 60 cm (24 in)
Zebra shovelnose Brachyplatystoma tigrinum 60 cm (24 in)
Vulture Catfish, zamurito Calophysus macropterus Pimelodidae Callophysus macropterus.jpg 40 cm (16 in)
Leiarius marmoratus Leiarius marmoratus (juv).jpg 100 cm (39 in)
Leiarius pictus 60 cm (24 in)
Redtail catfish Phractocephalus hemioliopterus Phractocephalus hemioliopterus2.JPG 120 cm (3.9 ft) Needs at least a 2,600 US gallons (9,800 L) tank when mature, even though this does not provide them with the space to show their natural behaviour.[11] 70–79 °F (21–26 °C)[11] 6.0–7.5[11]
Spotted pimelodus, pictus, pictus catfish Pimelodus pictus Pimelodus pictus.jpg 30 cm (12 in) These catfish are very appealing when small, but may grow somewhat large. Their mouths look small, but may eat smaller fish, as they can open their mouths very wide.
Ornate Pimelodus Pimelodus ornatus 38.5 cm (1.26 ft)
Sturgeon catfish Platystomatichthys sturio 40 cm (1.3 ft)
Barred sorubim Pseudoplatystoma fasciatum 104 cm (3.41 ft) Easy to confuse with P. tigrinum.
Tiger sorubim Pseudoplatystoma tigrinum Pseudoplatystoma tigrinum1.jpg 130 cm (4.3 ft) This fish is easy to confuse with P. fasciatum.
Firewood catfish, (planiceps) shovelnose catfish Sorubimichthys planiceps Firewood catfish.jpg 178 cm (70 in) The largest of the shovelnoses, this catfish grows huge and will need a 450 US gallons (1,700 L) min when mature.
Lima shovelnose catfish Sorubium lima Silure spatule.jpg 90 cm (3.0 ft) Although they are smaller than the tiger shovelnose, these catfish are extremely aggressive and extremely fast.
Squeakers and upside-down catfish
Common name Taxonomy Image Size Remarks Temperature range pH range
Cuckoo squeaker Synodontis multipunctatus Synodontis-multipunctatus.jpg 27.5 cm (10.8 in)
Decorated squeaker Synodontis decorus
Even-Spotted squeaker Synodontis petricola Synodontis petricola.jpg 10 cm (3.9 in)
Featherfin squeaker Synodontis eupterus Synodontis Eupterus 3.JPG
Lake Malawi syno Synodontis njassae Synodontis njassae 01 ssj 20050321.jpg
Polka dot syno Synodontis angelicus Synodontis angelica.jpg
Common syno, false upside-down catfish Synodontis nigrita
Upside-down catfish Synodontis nigriventris Synodontis.jpg 9.6 cm (3.8 in) S. nigriventris prefers bottom feeding on Tubifex, but its main diet consists of algae.
Other catfishes
Common name Taxonomy Image Size Remarks Temperature range pH range
Three-striped African catfish Pareutropius buffei 11.5 cm (4.5 in)
Giraffe catfish Auchenoglanis occidentalis Auchenoglanis occidentalis 01 by Line1.JPG 70 cm (28 in)
Electric catfish Malapterurus electricus Malapterurus electricus 1.jpg 122 cm (48 in)
Black lancer catfish Bagrichthys macracanthus 25 cm (9.8 in)
Harlequin lancer catfish Bagroides melapterus 30 cm (12 in)
Crystal-eyed catfish Hemibagrus wyckii 71 cm (28 in) highly aggressive and must be kept alone
Asian redtail catfish Hemibagrus wyckioides 130 cm (51 in) highly aggressive and must be kept alone
Shadow catfish Hyalobagrus flavus Pelteobagrus ornatus (4222100061).jpg 4.5 cm (1.8 in)
Mystus bimaculatus 6.5 cm (2.6 in)
Dwarf bumblebee catfish Pseudomystus leiacanthus 6 cm (2.4 in)
Asian bumblebee catfish Pseudomystus siamensis 15 cm (5.9 in)
Dinema catfish Belodontichthys dinema Belodontichthys dinema.jpg 100 cm (39 in).
Glass catfish Kryptopterus vitreolus Glaswelse.jpg 8 cm (3.1 in). Needs to be kept in a group of five or more. Needs generous amounts of plants.
Striped glass catfish Kryptopterus macrocephalus 10 cm (3.9 in). Needs to be kept in a group of five or more. Needs generous amounts of plants.
Borneo glass catfish Ompok eugeneiatus 16.5 cm (6.5 in).
Striped wallago catfish Wallago leerii Wallagonia leerii.jpg 150 cm (59 in).
Chocolate frogmouth catfish Chaca bankanensis Chaca bankanensis juveniles.png 20 cm (7.9 in)
Asian banjo catfish Acrochordonichthys rugosus 11 cm (4.3 in)
Walking catfish Clarias batrachus Clarias batrachus Aquarium tropical du Palais de la Porte Dorée 10 04 2016 1.jpg 50 cm (19.5 in) The albino form is common in the aquarium trade. This fish can survive out of the water and "walk" as long as kept wet, for a very long time. It is a dangerouly invasive species and should never be released or thrown out alive.
Stinging catfish Heteropneustes fossilis Мешкожаберный сом Гродно.JPG 30 cm (12 in)
Sun catfish Horabagrus brachysoma The Manjakoori (Sun Catfish) from the Chalakudy River, Kerala.jpg 45 cm (18 in)
Iridescent shark Pangasianodon hypophthalmus Aquarium tropical de Pierrefitte-Nestalas 03082018 Pangasianodon hypophthalmus 2.jpg 130 cm (51 in) Albino form is common in the aquarium trade, needs a large aquarium
Chao Phraya giant shark, giant pangasius Pangasius sanitwongsei Pangasiidae - Pangasius sanitwongsei.jpg 300 cm (120 in)
Colombian shark catfish Ariopsis seemanni MA Luisenpark Sciades seemanni.jpg 35 cm (14 in)
Blue whale catfish Cetopsis coecutiens 27 cm (11 in)
Banjo catfish Bunocephalus coracoideus 14 cm (5.5 in)
Striped raphael catfish Platydoras armatulus Platydoras costatus 5 (Piotr Kuczynski).jpg 43 cm (17 in)
Spotted raphael catfish Agamyxis pectinifrons Dornwels.JPG 15 cm (5.9 in) This species mainly feeds on algae. It needs a cave, and will feed when the aquarium light is out.
Bottlenose catfish Ageneiosus marmoratus 18.5 cm (7.3 in)
Gulper catfish Asterophysus batrachus 25 cm (9.8 in)
Midnight catfish Auchenipterichthys coracoideus 10 cm (3.9 in)
Oil catfish Centromochlus perugiae 5 cm (2.0 in)
Jaguar catfish Liosomadoras oncinus 17 cm (6.7 in)
Pygmy driftwood catfish Trachelyichthys exilis 8 cm (3.1 in)
Trachelyopterus fisheri 28 cm (11 in)

Characins and other characiformes[edit]

Common name Taxonomy Image Size Remarks Temperature range pH range
Black phantom tetra Hyphessobrycon megalopterus Hyphessobrycon megalopterus Porte Doree.jpg 3.6 cm (1.4 in)[12] the black phantom tetra enjoy being in groups of 6 or more and a slightly shaded tank. Males may claim small territories and occasionally minor battles may occur. The Phantom tetra goes well with other tetras of similar size. They also prefer floating plants.
Black neon tetra Hyphessobrycon herbertaxelrodi Black neon tetra.jpg 3.2 cm (1.3 in)[13] This fish is similar to the neon tetra other than coloration.
Black tetra, skirt tetra Gymnocorymbus ternetzi Adulter Trauermantelsalmer-Gymnocorymbus ternetzi.jpg 5 cm (2.0 in) A highly spirited fish that may occasionally chase its own species as well as harass slow moving fish with long fins. This fish is very hardy and can stand a variety of water qualities. Disease is not a big problem with the black tetra. The black tetra is also known as the black skirt tetra. The female black tetra is more robust and larger than the male.
Bleeding heart tetra Hyphessobrycon erythrostigma Kirschflecksalmler-W.jpg 6.5 cm (2.6 in) The bleeding heart tetra is distinguished by the small red spot on both sides of the fish. This fish is very prone to diseases, and can grow larger than most tetra species.
Bloodfin tetra Aphyocharax anisitsi Aphyocharax anisitsi 2.jpg 5 cm (2.0 in) The bloodfin tetra is distinguished by its red fins. This fish is generally peaceful. It will school with similarly sized and tempered fish.
Blue tetra Knodus borki Boehlkea fredcochui malefemale.jpg 5 cm (2.0 in) A very active species. In spite of its small size, it requires a larger tank (30"/29 gal or more)
Bucktooth tetra Exodon paradoxus DSCN6064 (6260740474).jpg 5 cm (2.0 in) Exodon paradoxus will eat smaller fish and harass larger fish, lepidophage (scale eater).
Buenos Aires tetra Hyphessobrycon anisitsi Hyphessobrycon anisitsi.jpg 7.5 cm (3.0 in) Hyphessobrycon anisitsi has some reputation as a "fin nipper" but this trend may vary among individual fish.
Cardinal tetra Paracheirodon axelrodi Paracheirodon cardinalis.JPG 5 cm (2.0 in) Generally hardy and peaceful. Will breed in captivity. Prefers low light and somewhat higher temperatures than the neon tetra. A schooling species (keep in groups of 8-10)
Cave tetra, blind tetra Astyanax mexicanus Astyanax mexicanus, Palmiarnia Poznańska.jpg 12 cm (4.7 in) The cave tetra is the blind cave form of the Mexican tetra. The blind cave tetra is easy to care for and is hardy. The fish is born with eyes, but they quickly deteriorate leaving behind two scars where the eyes once were. The blind tetra needs to be in a shoal in order to show peaceful behavior, and to prevent fin nipping. Despite their lack of eyes, the blind cave tetra can easily avoid other fish and obstacles in the tank. This tetra prefers low to moderate lighting.
Diamond tetra Moenkhausia pittieri Brillantsalmler.jpg 6 cm (2.4 in) Generally hardy and peaceful. Adults of both sexes develop spectacular reflective scales. Sexually dimorphic; males larger, with expanded dorsal fin.
Ember tetra Hyphessobrycon amandae AKT 1430bq.jpg 2 cm (0.79 in) A standard choice for "nano" tanks due to small adult size. Will not thrive with larger fish. A schooling species (keep in groups).
Emperor tetra Nematobrycon palmeri Emperor tetra.jpg 5 cm (2.0 in) An active, shoaling species; keep in groups, but may be aggressive with members of the same species in smaller (under 40 gal) tanks.
Flame tetra Hyphessobrycon flammeus Roter von Rio - Hyphessobrycon flammeus.jpg 2.5 cm (0.98 in)
Garnet tetra, pretty tetra Hemigrammus pulcher H.pulcher IMG 3268.jpg 6.5 cm (2.6 in)
Glass bloodfin tetra Prionobrama filigera Bloodfin Glass Tetra.jpg 6 cm (2.4 in)
Glowlight tetra Hemigrammus erythrozonus Tetra Glowlight cropped.jpg 3.75 cm (1.48 in) Generally hardy and peaceful; considered a standard choice for less experienced aquarists.
Golden pristella tetra Pristella maxillaris Pristella maxillaris.jpg 5 cm (2.0 in)
Green neon tetra Paracheirodon simulans Paracheirodon simulans.jpg 2.5 cm (0.98 in) Similar to neon tetra in care, size, and behavior but fish sold in pet stores are wild-caught. Does not usually breed in captivity. Needs good water quality, prefers low light. A schooling species (keep in groups).
Head and tail light tetra Hemigrammus ocellifer Head-&-Tail-Light-Tetra.jpg 4 cm (1.6 in)
January tetra Hemigrammus hyanuary Hemigrammus hyanuary thomnight 001.jpg 4 cm (1.6 in)
Lemon tetra Hyphessobrycon pulchripinnis Hyphessobrycon pulchripinnis.jpg 5 cm (2.0 in) Very likely to jump out of the tank unless there are some floating aquatic plants
Neon tetra Paracheirodon innesi Neonka obecna paracheirodon innesi.jpg 3.75 cm (1.48 in) The neon tetra is sensitive towards water quality. Bred in captivity but often badly inbred, making them less hardy and susceptible to diseases. However, the fish is very peaceful and will not attack another member of the tank. Females are larger than males. Due to their small size, the neon tetra should not be kept with large or aggressive fish. The neon tetra is a schooling fish that feels most comfortable when in groups.
Ornate tetra Hyphessobrycon bentosi Schmucksalmler Hyphessobrycon bentosi.jpg 4.5 cm (1.8 in)
Penguin tetra, blackline penguinfish Thayeria boehlkei Thayeria boehlkei.jpg 6.5 cm (2.6 in)
Red Eye tetra Moenkhausia sanctaefilomenae Red eye tetra.jpg 4 cm (1.6 in)
Red phantom tetra Hyphessobrycon sweglesi Megalamphodussweglesi01.jpg 4.5 cm (1.8 in)
Rosy tetra Hyphessobrycon rosaceus Male Rosy Tetra.JPG 4 cm (1.6 in)
Royal tetra Inpaichthys kerri 05.Inpaichtys kerri.JPG 3.5 cm (1.4 in)
Rummy-nose tetra Hemigrammus rhodostomus Hemi.jpg 5 cm (2.0 in) This common name is used for three different species of schooling fish with similar patterns: Hemigrammus rhodostomus, Hemigrammus bleheri, and Petitella georgiae.
Splash tetra Copella arnoldi Copella arnoldi.jpg 5.5 cm (2.2 in) Active, sensitive to water quality, prefers moving water. Lives near top of tank. Breeding pairs leap to deposit eggs on overhanging leaves; may jump out of uncovered tanks. A schooling species.
Serpae tetra Hyphessobrycon serpae Serpae tetra.JPG 4.5 cm (1.8 in) This fish may nip the fins of slow-moving fish or fish smaller than it. It is best put with other large tetras or with fish of similar size or larger.
Silvertip tetra Hasemania nana Kobbertetra Hasemania nana.jpg 3 cm (1.2 in) Silvertip tetras tend to be moderately aggressive and, because of their small size, should not be kept with large or aggressive fish.
X-ray tetra Pristella maxillaris Pristella tetra1.jpg 4.5 cm (1.8 in) Also just called the X-ray fish.
Congo tetra Phenacogrammus interruptus Phenacogrammus interruptus (aka).jpg 7.5 cm (3.0 in) Sufficiently peaceful for larger (40 gal+) home aquariums, though it may bite fishes smaller than its size. It is more comfortable in indirect light. Over-head lighting is preferred and under no circumstances should light be directed at the front or rear glass.
Jellybean tetra Ladigesia roloffi Ladigesia roloffi - AquaPorteDoree 06.JPG 3 cm (1.2 in) Smaller even than the neon tetra. This mid west African schooling species is a favoured species for the nano-aquarium.
Long-fin tetra Brycinus longipinnis Langflossensalmler Brycinus longipinnis Tierpark Hellabrunn-2.jpg 12.5 cm (4.9 in)
Niger tetra Arnoldichthys spilopterus Arnoldichthys spilopterus.JPG 10 cm (3.9 in)
Yellow-tailed Congo tetra Alestopetersius caudalis Alestopetersius caudalis.jpg 6 cm (2.4 in)
Common name Taxonomy Image Size Remarks Temperature range pH range
Common hatchetfish Gasteropelecus sternicla Gasteropelecus sternicla.JPG 4 cm (1.6 in)
Marbled hatchetfish Carnegiella strigata Beilbauchsalmler.jpg 5 cm (2.0 in) Peaceful and dwells at the top of the tank in schools. Rarely breeds in captivity. This powerful leaper can easily jump out of an aquarium, so keep only in a fully covered tank.
Black-winged hatchetfish Carnegiella marthae BlackWingedHatchetfish.jpg 4 cm (1.6 in) Peaceful and dwells at the top of the tank in schools. The most hardy of all the hatchetfish, but not the most plentiful. Does not breed in captivity. This powerful leaper can easily jump out of an aquarium, so keep only in a fully covered tank.
Pencil fishes
Common name Taxonomy Image Size Remarks Temperature range pH range
Golden pencilfish Nannostomus beckfordi Nannostomus-beckfordi.jpg 6 cm (2.4 in) Hardiest, easiest-care species of aquarium pencilfish. Populations vary in color and pattern. Like all pencilfish, it is timid, eats small foods, enjoys live/frozen foods, can be bred in captivity, and cannot compete with aggressive fish. Like all pencilfish, males may be aggressive with each other if the tank or the group of pencilfish is too small.
Hockeystick pencilfish Nannostomus eques Nannostomus eques.jpg 3.5 cm (1.4 in) Naturally swims and rests at a 45-degree angle.
Barred pencilfish Nannostomus espei Nannostomus-espei.jpg 3 cm (1.2 in) Other pencilfish adopt this barred pattern while inactive at night; only N. espei has it at all times.
Dwarf pencilfish Nannostomus marginatus Nannostomus marginatus, adultes Männchen.jpg 2.5 cm (0.98 in) Less aggressive with members of its own species than most pencilfish; males rarely spar.
Coral-red pencilfish Nannostomus mortenthaleri Red Pencilfish.jpg 3 cm (1.2 in) More aggressive with members of its own species than most pencilfish. Keep in larger groups in larger tanks to diffuse aggression.
Nannostomus nigrotaeniatus Nannostomus nigrotaeniatus - AquariumPorteDoree 02.jpg 3 cm (1.2 in)
Three-lined pencilfish Nannostomus trifasciatus Nannostomustrifasciatus.jpg 3 cm (1.2 in) Males defend small territories. Otherwise a peaceful species.
One-lined Pencilfish Nannostomus unifasciatus Nannostomus unifasciatus.jpg 4 cm (1.6 in) Naturally swims and rests at a 45-degree angle.
Serrasalminae (pacus, piranhas, and silver dollars)
Common name Taxonomy Image Size Remarks Temperature range pH range
Silver dollar Metynnis argenteus Silver Dollar Metynnis argenteus.jpg 15 cm (5.9 in) The name "silver dollar" may also refer to Metynnis hypsauchen, Metynnis maculatus, or other related fishes. It will chew and eat plants.
Red-bellied pacu Colossoma bidens Red Pacu.JPG 120 cm (3.9 ft) The red-bellied pacu is a close relative of the piranhas, but without the sharp teeth and the aggression. However, care should be taken if interacting physically with the pacu, as their powerful jaws can crush human bone. The pacu is a peaceful fish that requires at least a 750-liter (200-gallon) tank when fully mature. It is omnivorous and can be put with large cichlids, but avoid smaller fish. Despite their similar appearance to piranhas, the pacu is not suited to eat meat very well, as their natural diets of nuts suggest. This fish can grow to 1.2 m (3.9 ft), so need a very large tank (750 l or 200 gal minimum). This fish grows very fast, and can grow as much as one foot in the first year. 78–82 °F (26–28 °C)
Red piranha Pygocentrus nattereri Gregory Moine - Red bellied Piranha (by).jpg 33 cm (13 in) Be very careful when conducting maintenance on their aquarium and hide any wires because they may chew through the waterproof coverings.
Disk tetra Myleus schomburgkii Myleus schomburgkii.jpg 40 cm (16 in) 23 °C to 27 °C 5.0–7.0
Other Characins
Common name Taxonomy Image Size Remarks Temperature range pH range
African pike characin Hepsetus odoe Hepsetus odoe.jpg
Goliath tigerfish Hydrocynus goliath Hydrocynus goliath.jpg 133 cm (52 in)
Hujeta gar Ctenolucius hujeta Ctenolucius hujeta 3.jpg 25 cm (9.8 in)
Kissing prochilodus, flagtail Prochilodus Semaprochilodus insignis Prochilodus insignis - Zoo Frankfurt 1.jpg 27.5 cm (10.8 in)
Marbled headstander Abramites hypselonotus Abramites hypselonotus.jpg 14 cm (5.5 in)[14] Keep either one headstander or a group of seven or more as they will fight amongst themselves in small groups.
Banded leporinus Leporinus fasciatus Banded Leporinus (Leporinus fasciatus) (7124562451).jpg 27 cm (11 in)
Striped headstander Anostomus anostomus Anostomus anostomus, striped headstander.jpg 16 cm (6.3 in)
Six-banded distichodus Distichodus sexfasciatus Distichodontidae - Distichodus sexfasciatus.JPG 75 cm (30 in)
Payara Hydrolycus scomberoides Hydrolycus scomberoides by OpenCage.jpg 117 cm (46 in) Need a large aquarium and are entirely carnivorous and most fish shouldn't be kept with them, including the related piranha because it may eat piranhas.
Pink-tail chalceus Chalceus macrolepidotus Chalceus macrolepidotus.jpg 25 cm (9.8 in)
Red wolf fish Erythrinus erythrinus Erythrinus erythrinus.jpg 20 cm (7.9 in)
Red tail barracuda Acestrorhynchus falcatus Acestrorhynchus falcatus Aquarium tropical du Palais de la Porte Dorée 10 04 2016.jpg 30 cm (12 in)
Spotted headstander Chilodus punctatus Chilodus punctatus.jpg 8 cm (3.1 in)


Lake Malawi cichlids
Common name Taxonomy Image Size Remarks Temperature range pH range
Sunshine peacock cichlid Aulonocara baenschi Aulonocara hansbaenschi.jpg 15 cm (5.9 in) Beautiful coloration on males
Pale usisya aulonocara Aulonocara steveni Aulonocara steveni Usisya.jpg
Red fin hap Copadichromis borleyi Copadichromis borleyi2.jpg
Eureka red peacock Aulonocara jacobfreibergi Aulonocara jacobfreigi.jpg 15 cm (5.9 in) Beautiful coloration on males
Spilo Champsochromis spilorhynchus 40 cm (16 in)
Blue dolphin cichlid, lumphead cichlid Cyrtocara moorii Cyrtocara moorii.jpg 25 cm (9.8 in)
Afra cichlid, dogtooth cichild Cynotilapia afra Cynotilapia afra.jpg 10 cm (3.9 in)
Rusty cichlid, lavender cichild Iodotropheus sprengerae Iodotropheus sprengerae.jpg 10 cm (3.9 in)
Fuelleborn's cichlid, Blue mbuna Labeotropheus fuelleborni Labeotropheus fuelleborni crop.png 18 cm (7.1 in)
Electric yellow cichlid Labidochromis caeruleus Electric Yellow Lab Cichlid.jpg 20 cm (7.9 in) Very active fish, need many rock caves to allow establishment of territories, less aggressive than other mbuna
Electric blue cichlid Sciaenochromis fryeri Fryeri2.jpg
Malawi eyebiter Dimidiochromis compressiceps Cichlidae - Dimidiochromis compressiceps.JPG
Hongi, Red-top kimpumpa Labidochromis sp. "Hongi" Labidochromis sp hongi.jpg 13 cm (5.1 in)
Yellow Top Mbamba Labidochromis sp. "Mbamba Bay" 13 cm (5.1 in)
Auratus cichlid, Malawi golden cichlid Melanochromis auratus Melanochromis auratus (female).jpg 10 cm (3.9 in) Aggressive
Chipokee cichlid Melanochromis chipokae 12 cm (4.7 in) Aggressive
Blue johanni cichlid, Maingano Melanochromis cyaneorhabdos Melanochromis cyaneorhabdos.jpg 10 cm (3.9 in) Very active fish, need many rock caves to allow establishment of territories. Aggressive
Pearl of Likoma Melanochromis joanjohnsonae Melanochromis joanjohnsonae.jpg 10 cm (3.9 in)
Aurora Melanochromis aurora 10 cm (3.9 in)
Red zebra cichlid Metriaclima estherae Pyszczak.jpg 10 cm (3.9 in) Very active fish, need many rock caves to allow establishment of territories
Cobalt blue cichlid, cobalt zebra cichlid Maylandia callainos Cobaltblue1.jpg 10 cm (3.9 in) Very active fish, need many rock caves to allow establishment of territories
Kenyi cichlid Maylandia lombardoi Maylandia lombardoi.jpg 13 cm (5.1 in) Aggressive; sexually dichromatic
Fusco Nimbochromis fuscotaeniatus Nimbochromis Fuscotaeniatus male.jpg 25 cm (9.8 in)
Livingston's cichlid Nimbochromis livingstonii Adult male livingstonii.png 25 cm (9.8 in)
Kaligono Nimbochromis polystigma Polystigma.jpg 30 cm (12 in)
Venustus cichlid, giraffe cichild Nimbochromis venustus Nimbochromis venustus.JPG 25 cm (9.8 in) 'giraffe' spotting is juvenile coloration only
Red empress cichlid Protomelas taeniolatus Protomelas taeniolatus by Derek Ramsey.jpg 15 cm (5.9 in)
Bumblebee cichlid, hornet cichlid Pseudotropheus crabro Pseudotropheus Crabo Male.JPG 15 cm (5.9 in)
Yellow-tail acei Pseudotropheus acei Yellow tailed acei.jpg 10 cm (3.9 in)
Johanni cichlid Pseudotropheus johannii Melanochromis johanni Male.jpg 10 cm (3.9 in) Aggressive
Dwarf Mbuna Pseudotropheus demasoni Pseudotropheus demasoni.jpg 10 cm (3.9 in)
Saulosi Pseudotropheus saulosi Pseudotropheus saulosi.jpg 7.5 cm (3.0 in)
Malawi barracuda Rhampsochromis cf. macrophthalmus 23 cm (9.1 in)
Tyrannochromis macrostoma 38 cm (15 in)
Lake Tanganyika cichlids
Common name Taxonomy Picture Size Remarks Temperature range pH range
Benthochromis tricoti Benthochromis tricoti.jpg
Boulengerochromis microlepis DKoehl Boulengerochromis microlepis.jpg 90 cm (35 in) The largest cichlid
Frontosa cichild Cyphotilapia frontosa Cyphotilapia frontosa by Ark.jpg 40 cm (16 in) Aggressive; well-known
Cyathopharynx furcifer Cyathopharynx.JPG Not readily available in the aquarium trade.
Variabilichromis moorii Variabilichromis moorii en aquarium..jpg
Frontosa cichild Cyphotilapia gibberosa Cyphotilapia gibberosa - GRB.jpg 40 cm (16 in) The frontosa have recently been broken up into three separate species. The gibberosa come from the southern part of the Lake
Frontosa cichild Cyphotilapia sp. "North" 40 cm (16 in) This yet to be officially named species is intermediate in scale count between gibberosa and frontosa.
Julie cichlid Julidochromis dickfeldi Julidochromis dickfeldi.jpg Beautiful; interesting
Masked Julie Julidochromis marlieri Schachbrett-Schlankcichlide.jpg 15 cm (5.9 in) fem / 10 cm (3.9 in) male Striking coloration
Julie cichlid Julidochromis ornatus
Julie cichlid Julidochromis regani Julidochromis regani adult.jpg 15 cm (5.9 in) fem / 10 cm (3.9 in) male
Julie cichlid Julidochromis transcriptus J gombe1.jpg 10 cm (3.9 in) Striking coloration
Herring cichlid, sardine cichlid Cyprichromis leptosoma Cyprichromis leptosoma.jpg
Ectodus descampsii Ectodus descampsii.jpg
Chalinochromis spp. Chalinochromis popelini.jpg
Neolamprologus multifasciatus Neolamprologus multifasciatus 2.jpg 3.8 cm (1.5 in) A small shell-dwelling cichlid from Lake Tanganyika. Distinguished from the similar L. similis by the lack of striping on the face. One of the best choices for first-time cichlid keepers and smaller aquaria.
Lamprologus ocellatus Lamprologus ocellatus.jpg 5 cm (2.0 in)
Neolamprologus similis Neolamprologus similis 2060.jpg 3.8 cm (1.5 in) A small shell-dwelling cichlid from Lake Tanganyika. Very similar to N. multifsciatus but similis has striping from the body continue to the head
Lobochilotes labiatus Limnotilapia dardenni (top), Lobochilotes labiatus (bottom) - Royal Museum for Central Africa - DSC06856.JPG 40 cm (16 in)
Lyretail cichlid, fairy cichlid Neolamprologus brichardi Neolamprologus brichardi.jpg 10 cm (3.9 in) Often recommended for first-time cichlid keepers. Needs somewhat more space than N. multifasciatus
Lemon cichlid Neolamprologus leleupi Neolamprologus leleupi 2.jpg 11.5 cm (4.5 in)
Featherfin Ophthalmotilapia ventralis 15 cm (5.9 in)
Petrochromis trewavasae 20 cm (7.9 in) Aggressive
Simochromis pleurospilus 10 cm (3.9 in)
Tropheus duboisi Tropheus duboisi.jpg 13 cm (5.1 in) Males very aggressive; juveniles distinctively colored
Tropheus moorii TropheusspRed200.jpg 14 cm (5.5 in)
Tropheus polli Tropheus polli.jpg 14 cm (5.5 in)
Lake Victoria cichlids
Common name Taxonomy Picture Size Remarks Temperature range pH range
Astatotilapia aenocolor 13 cm (5.1 in)
Astatotilapia elegans 10 cm (3.9 in)
Zebra obliquidens Astatotilapia latifasciata 11.5 cm (4.5 in)
Astatotilapia nubila 11.5 cm (4.5 in)
Astatotilapia piceatus 10 cm (3.9 in)
Astatotilapia schubotziellus 10 cm (3.9 in)
Astatotilapia sp. "Red Tail" 11.5 cm (4.5 in)
Astatotilapia sp. "Spot Bar" 13 cm (5.1 in)
Allauad's haplo Astatoreochromis alluaudi Astatoreochromis-alluaudi-LakeRweru-GB.jpg
Hippo Point Salmon Ptyochromis sp. "Hippo Point Salmon" 14 cm (5.5 in)
Flameback Pundamilia nyererei Pundamilia (Haplochromis) nyererei male.jpg 10 cm (3.9 in)
Xystichromis phytophagus 10 cm (3.9 in)
Miscellaneous African cichlids (non-Rift Lake)
Common name Taxonomy Picture Size Remarks Temperature range pH range
African butterfly cichlid Anomalochromis thomasi Anomalochromis thomasi 2.jpg
Jewel cichlid, two-spotted jewel cichlid Hemichromis bimaculatus Hemichromis bimaculatus1.jpg 4-5 inch other hemichromis species are sometimes sold under the same name
Lionhead cichlid Steatocranus casuarius Steatocranus casuarius.jpg
Lifalili jewel cichlid, blood-red jewel cichlid Hemichromis lifalili Cichlidae - Hemichromis lifalili.JPG
Kribensis, krib Pelvicachromis pulcher Pelvicachromis pulcher (male).jpg Readily breed in small aquaria. Often recommended for smaller tanks and first-time cichlid keepers. Aggressive and territorial towards other fishes especially its own kind during mating and after spawning
Kribensis, krib, many common names because of many subspecies Pelvicachromis taeniatus Pelvicachromis taeniatus.JPG
Guenther's Mouthbrooder Chromidotilapia guentheri Chromidotilapia guntheri Bama BF cpl fry2.jpg
Dwarf cichlids (apistogrammas, rams and others)
Common name Taxonomy Picture Size Remarks Temperature range pH range
Agassiz's dwarf cichlid Apistogramma agassizii Apistogramma Agassizii.jpg
Zebra acara Nannacara adoketa Ivanacara adoketa5265.jpg This genus (often represented by N. anomala, the golden dwarf cichlid) is often recommended as one of the best cichlids for new cichlid keepers and smaller aquaria.
Yellow dwarf cichlid Apistogramma borellii Apistogramma borellii.jpg
Cockatoo dwarf cichlid Apistogramma cacatuoides Cacatuoides.JPG
Panda dwarf cichlid Apistogramma nijsseni Apistogramma nijsseni (f).jpg
Three-Stripe Dwarf Cichlid Apistogramma trifasciata
Apistogramma eremnopyge
Two-Stripe Dwarf Cichlid Apistogramma bitaeniata Apistogramma bitaeniata.jpg 7.5 cm (3.0 in)
Checkerboard Cichlid Dicrossus filamentosus Dicrossus filamentosus male.png
Blue ram, German ram Mikrogeophagus ramirezi Antennebaarsje.jpg Fairly common. Sensitive to water quality. Several color morphs available. Has been highly inbred in the aquarium trade and often shows poor hardiness.
Bolivian ram Mikrogeophagus altispinosa Male altispinosa dwarf cichlid (3229597033).jpg
Dwarf flag cichlid Laetacara curviceps Laetacara curviceps.jpg
Central American cichlids
Common name Taxonomy Picture Size Remarks Temperature range pH range
Midas cichild, red devil cichlid Amphilophus citrinellus Dählhölzli - Zitronen Buntbarsch 3.jpg Note that Amphilophus labiatus is also called red devil cichlid
Poor man's tropheus Hypsophrys nematopus Neetroplus nematopus.png
Red devil cichlid Amphilophus labiatus Amphilophus labiatum, weiblich.jpg Note that Amphilophus citrinellus is also called red devil cichlid
Firemouth cichlid Cichlasoma meeki Feuermaulbuntbarsch.jpg Typically medium aggression; easily bred
Jack Dempsey cichlid Rocio octofasciata Cichlasoma octofasciata.jpg
Jaguar cichlid, managuense cichlid Parachromis managuensis Parachromis managuensis 2012 G1.jpg Exceptionally beautiful adult coloration; large adult size
Mayan cichlid Mayaheros urophthalmus Mayan10a.jpg
Convict cichlid Archocentrus nigrofasciatus Archocentrus nigrofasciatus female.jpg Common, very easy to breed, aggressive. A beautiful fish with bad temper. Small variations in colors, can be found in almost completely black and white coloration - therefore the name "Convict"
T-bar cichlid Amatitlania sajica align="center"
Wolf cichlid Parachromis dovii Parachromis dovii guapote.JPG
Texas cichlid, Rio Grande cichlid Herichthys cyanoguttatus Herichthys cyanoguttatum (Rio Grande Cichlid).jpg Large adult size
South American cichlids
Common name Taxonomy Picture Size Remarks Temperature range pH range
Severum Heros efasciatus Heros severus.JPG Y the gold variety is more common than the natural green one
Green terror Andinoacara rivulatus Andinoacara rivulatus - 20061112.jpg Fairly common
Blue acara Andinoacara pulcher Aequidens pulcher.jpg H
Greenstreaked Eartheater, cupid cichlid Biotodoma cupido Biotodoma cupido.png
Keyhole cichlid Cleithracara maronii Akara z Maroni.jpg
Flag cichlid Mesonauta festivus Mesonauta festivus.jpg
Freshwater angelfish biodome.jpg 15 cm (5.9 in)
Thread-finned acara Acarichthys heckelii Acarichthys heckeli.JPG
Pterophyllum altum.jpg
Pterophyllum leopoldi Pterophyllum leopoldi.jpg
Eartheater cichlid Geophagus altifrons Cichlidae - Geophagus altifrons.JPG
Common discus, red discus Symphysodon discus Discus heckel.jpg 20 cm (7.9 in) various color varieties, the discus requires high water quality and a varied diet. Do not keep with fast fish as the discus is a slow eater and will not fight for food. Despite their beauty, the discus is one of the least hardy aquarium fishes available. This fish should only be kept by the experienced aquarium keeper.
Blue discus, green discus Symphysodon aequifasciatus Blue Discus.jpg 20 cm (7.9 in) fancy hybrids of this species and Symphysodon discus can also be found in trade
Chocolate cichlid Hypselecara temporalis Hypselecara temporalis.jpg
Oscar Astronotus ocellatus Astronotus ocellatus - side (aka).jpg 45 cm (18 in) has different varieties including long-fin, albino, golden, etc. The oscar cichlid is fast growing and can grow to a very large size when mature, and therefore should be housed in a large aquarium. The oscar can be messy to look after as they love to dig up plants and scoop up rocks. The oscar should be put with fish of similar size as they will eat any fish that can fit in their mouth. The oscar prefers to be with members of its own species, but this is not a necessity for its well being. The oscar is one of the more hardy cichlids, and can be put with other large cichlids, pacus, large plecos, large sharks, and other large fish.
Uaru, waroo Uaru amphiacanthoides Uaru.jpg Also known as the Triangle Ciclid.
Peacock bass, butterfly peacock bass Cichla orinocensis Peacock bass.jpg
Other cichlids
Common name Taxonomy Picture Size Remarks Temperature range pH range
Canara pearlspot Etroplus canarensis
Green chromide Etroplus suratensis Etroplus suratensis.jpg
Orange chromide Etroplus maculatus Etroplus Maculatus.JPG
Pinstripe damba Paretroplus menarambo Cichlidae - Paretroplus menarambo.JPG
Blood parrot cichlid - Hybrid - BloodParrot.jpg In the scientific community it is not considered a cichlid (or any species of fish) because it does not occur naturally in the wild (created by man), for this reason it will not be given a scientific name.
Flowerhorn cichlid - Hybrid - Flowerhorn.jpg 25 cm (9.8 in) In the scientific community it is not considered a cichlid (or any species of fish) because it does not occur naturally in the wild (created by man), for this reason it will not be given a scientific name. This is also an aggressive fish and does best in a species-only setup.


Common name Taxonomy Picture Size Remarks Temperature range pH range
Arulius barb Dawkinsia arulius 12 cm (4.7 in)
Bigspot barb, Duncker's barb Barbodes dunckeri 13 cm (5.1 in) Peaceful when small but should not be kept with other species at adulthood.
Black ruby barb Pethia nigrofasciatus Black Ruby Barb 700.jpg 6.5 cm (2.6 in)
Cherry barb Puntius titteya Male Cherry Barb 700.jpg 4.8 cm (1.9 in) very peaceful and hardy, and works well with white clouds and neon tetras. Long-finned and extra red morphs are available. Wild type females are larger and much less red than males.
Clipper barb Enteromius callipterus 7.5 cm (3.0 in)
Clown barb Barbodes everetti Clownbarbe 2.jpg 15 cm (5.9 in)
Denison's barb, red line torpedo barb Sahyadria denisonii Puntius denisonii 1.jpg 15 cm (5.9 in) Sensitive to water quality.
Gold barb Barbodes semifasciolatus Brokat.jpg 8 cm (3.1 in) One of the most common fish for new aquarists. Very hardy, breeds in captivity, tolerates small tanks. The wild type of this species is greenish-gray and rarely seen for sale.
Golden barb Pethia gelius 5 cm (2.0 in)
Greenstripe barb Puntius vittatus 5 cm (2.0 in)
Indian Glass Barb Laubuka laubuca 6.7 cm (2.6 in)
Melon barb Puntius fasciatus 15 cm (5.9 in)
Odessa barb Puntius padamya Puntius Padamya.jpg 8 cm (3.1 in) Bright red coloration on males; females are slightly larger and show less red. Hardy and tolerant. Like most barbs, needs a diet with some vegetable food or algae.
Onespot barb Puntius terio 15 cm (5.9 in)
Panda barb Puntius fasciatus Pandabarben.jpg 5 inches
Pool barb Puntius sophore Puntius sophore 2.jpg 18 cm (7.1 in)
Partipentazona barb Puntigrus partipentazona Puntius partipentazona FOWLER.jpg 3.8 cm (1.5 in)
Rosy barb Pethia conchonius Male Rosy Barb.gif 13 cm (5.1 in) Similar to odessa barb but requires somewhat more space. A "neon" form is available; both males and females are bright red.
Shortfin barb Barbus brevipinnis 4.6 cm (1.8 in)
Snakeskin barb Desmopuntius rhomboocellatus Puntius rhomboocellatus.jpg 3.5 inches
Spottedsail barb, dwarf barb Pethia phutunio 7.8 cm (3.1 in)
Swamp barb Puntius chola Puntius chola.jpg 15 cm (5.9 in)
Ticto barb Barbus ticto 10 cm (3.9 in)
Tic-tac-toe barb Puntius stoliczkanus PuntiusStoliczkanus.jpg 5 cm (2.0 in)
Tiger barb, sumatra barb Puntius tetrazona Tigerbarbe Puntius tetrazona.jpg 7.5 cm (3.0 in) There are many varieties as well as hybrids with other barbs. Good community schooling fish. Can be aggressive if kept in small numbers, aim for a group of 6 or more.
Spanner barb, t-barb Barbodes lateristriga Puntius lateristriga.jpg 20 cm (7.9 in)
Fiveband barb, pentazona barb Desmopuntius hexazona Desmopuntius hexazona.jpg 5 cm (2.0 in) this species may be confused with tiger barb due to similarities
Checker barb Oliotius oligolepis Puntius oligolepis.jpg 5 cm (2.0 in)
Tinfoil barb Barbonymus schwanenfeldii Tinfoil barbs 01.jpg 36 cm (14 in) This species is much larger than most other barbs
Other cyprinids
Common name Taxonomy Picture Size Remarks Temperature range pH range
Bala shark Balantiocheilus melanopterus Balantiocheilos melanopterus.JPG 40 cm (16 in)
Black shark Labeo chrysophekadion Black Sharkminnow (Labeo chrysophekadion) (8683050709).jpg 90 cm (35 in)
Siamese algae eater Crossocheilus oblongus Crossocheilus siamensis.jpg 16 cm (6.3 in) Many other cyprinids are sometimes mistakenly sold under this name. Very likely to jump out of the aquarium especially after reaching adult size. Very useful for getting rid of algae when it is young but prefer fish food upon reaching adulthood.
Flying fox (fish) Epalzeorhynchos kalopterus Epalzeorhynchos kalopterus.jpg 16 cm (6.3 in) this species may be sold as Siamese algae eater
Red-tailed black shark Epalzeorhynchos bicolor Epalzeorhynchos bicolor.jpg 6 in albino variation available. aggressive with fish of same species. best kept alone or in groups of 5 or more.
Rainbow shark Epalzeorhynchos frenatum Fransenlipper.JPG 6 in albino variation available. aggressive with other fish of same species. best kept either alone, or in groups of 5 or more individuals.
Cambodian log sucker, false Siamese algae eater Garra cambodgiensis Crossocheilus siamensis pl.jpg this species may be sold as Siamese algae eater
Chinese algae eater Gyrinocheilus aymonieri Chinese algae eater.jpg This species may be sold as Siamese algae eater. A gold colored form also exists. Could be territorial
Common name Taxonomy Picture Size Remarks Temperature range pH range
Espei rasbora Trigonostigma espei 5 cm (2.0 in)
Harlequin rasbora Trigonostigma heteromorpha Trigonostigma heteromorpha1.jpg 5 cm (2.0 in) Also known as Harlequin tetra or Harlequin barb.
Glowlight rasbora Trigonostigma hengeli Trigonostigma hengeli.jpg 5 cm (2.0 in) 5 cm (2.0 in)
Red-striped rasbora Trigonopoma pauciperforata Trigonopoma pauciperforatum female.png 7.5 cm (3.0 in) Range: Sumatra 22–29 °C (72–84 °F)
Dwarf rasbora Boraras maculatus Boraras Maculata.jpg 2.5 cm (0.98 in)
Eyespot rasbora Brevibora dorsiocellata Rasbora dorsiocellata.jpg 3.5 cm (1.4 in)
Brilliant rasbora Rasbora einthovenii Rasbora einthovenii.jpg 9 cm (3.5 in)
Clown rasbora Rasbora kalochroma Rasbora kalochroma.jpg 10 cm (3.9 in)
Scissortail rasbora Rasbora trilineata Rasbora trilineata.jpg 15 cm (5.9 in)
Volcano rasbora Rasbora vulcanus Rasbora vulcanus pair.png 5 cm (2.0 in)
Blackline rasbora, red-tailed rasbora Rasbora borapetensis Redtail.JPG
Danios and other danionins
Common name Taxonomy Picture Size Remarks Temperature range pH range
Sundadanio axelrodi Sundadanio cf. axelrodi.jpg 2 cm (0.79 in)
Pearl danio Danio albolineatus Danio albolineatus.jpg 6.5 cm (2.6 in) subspecies:blue-redstripe danio, Kedah danio
Bengal danio, Sind danio Devario devario
Giant danio Devario aequipinnatus Devario aequipinnatus.JPG
Malabar danio Devario malabaricus Danio sp.jpg 11.5–14 cm (4.5–5.5 in)
Queen danio Devario regina
Spotted danio Danio nigrofasciatus Danio nigrofasciatus.jpg
Turquoise danio Danio kerri Danio kerri.jpg
Zebra danio Danio rerio Zebrafisch.jpg 5 cm (2.0 in) there are many variations of this fish: leopard danio, the spotted colour morph, and GloFish, the genetically modified fluorescent fish.
Cold-water cyprinids
Common name Taxonomy Picture Size Remarks Temperature range pH range
Goldfish Carassius auratus Goldfish3.jpg 15+ cm (6+ in) variations: Black Moor, Bubble Eye, Butterfly Tail, Calico, Celestial Eye, Comet, Common, Fantail, Lionchu, Lionhead, Oranda, Panda Moor, Pearlscale, Pompom, Ranchu, Ryukin, Shubunkin, Telescope eye, Veiltail. All need a large tank or pond. Cannot survive in "goldfish bowls."
Koi, common carp Cyprinus carpio Ojiya Nishikigoi no Sato ac (3).jpg 30+ cm (12+ in) the fancy variations of common carp are known as koi.
Bitterling Rhodeus amarus Rhodeus amarus 2008 G1.jpg 10 cm (4 in)
White Cloud Mountain minnow Tanichthys albonubes White Cloud Mountain Minnow 1.jpg 3.8 cm (1.5 in) lutino variety can also be found in the aquarium trade
Red shiner Cyprinella lutrensis Red shiner.JPG 5–9 cm (2.0–3.5 in)
Common dace Leuciscus leuciscus Leuciscus leuciscus.jpg 40 cm (16 in) 39 to 72 °F (4 to 22 °C) 6.0 to 8.0
Rosy red minnow, fathead minnow Pimephales promelas Rosy Red Minnows fullsize.jpg 5–7.5 cm (2.0–3.0 in) sold as feeder fish; the gold variety known as "rosy red" is very common (the image is of the "rosy red" strain) 10–21 °C (50–70 °F) 7.0 - 7.5
Rainbow shiner Notropis chrosomus Rainbow Shiner.jpg
European minnow Phoxinus phoxinus Phoxinus.jpg
Southern redbelly dace Phoxinus erythrogaster Phoxinus erythrogaster.jpg 7.5–10 cm (3.0–3.9 in)
Tench Tinca tinca Tinca tinca Prague Vltava 2.jpg A few color varieties have been made from the wild species, even some multicolored.
Golden orfe Leuciscus idus LeuciscusIdusWindeIde56cm 21-4-2009 16-46-58.JPG
Chinese high fin banded shark Myxocyprinus asiaticus Myxocyprinus asiaticus by OpenCage.jpg 60 cm (24 in)

Loaches and related cypriniformes[edit]

Common name Taxonomy Picture Size Remarks Temperature range pH range
Saddle-back Loach Homaloptera orthogoniata 13 cm (5.1 in)
Fork-tailed loach Vaillantella maassi 12.5 cm (4.9 in) Rarely sold and not bred in captivity.
Horseface loach Acantopsis dialuzona Acantopsis choirorhynchos.JPG 20 cm (7.9 in) May bury itself; keep on sand substrate.
Pangio anguillaris 12 cm (4.7 in)
Kuhli loach, coolie loach Pangio kuhlii Kuhli loaches.jpg 10 cm (3.9 in) a number of similar Pangio species are sold under the same name. All are hardy, peaceful, and highly social; keep in groups.
Java loach Pangio oblonga Pangio oblonga acquarium.jpg 8 cm (3.1 in)
Clown loach Chromobotia macracanthus 2015-09-13-223-Tiger-loach.jpg 20 cm (7.9 in) Clown loach has a sociable personality and should be kept in at least groups of 5. They may eat pond snails kept in aquariums. Clown loaches will eventually need a 6' long aquarium
Green tiger loach Syncrossus hymenophysa 21 cm (8.3 in)
Banded tiger loach Syncrossus helodes Syncrossus helodes.jpg 30 cm (12 in)
Redfin tiger loach Syncrossus berdmorei Syncrossus berdmorei.jpg 15 cm (5.9 in)
Dwarf botia Ambastaia sidthimunki Schachbrettschmerle.jpg 5.5 cm (2.2 in) formerly named Botia sidthimunki. An active and peaceful social species (keep in groups) that often swims in mid-water.
Yoyo loach Botia almorhae Yoyo Loach.jpg 15 cm (5.9 in)
Bengal loach Botia dario Botia dario.jpg 15 cm (5.9 in) Also known as the Queen loach. They hide during the day. They like river sand in the tank because they like to cover themselves in it.
Botia histrionica Botia histrionica.jpg 12 cm (4.7 in)
Polka-Dot Loach Botia kubotai Botia kubotai2.jpg 12 cm (4.7 in)
Gangetic loach Botia rostrata 25 cm (9.8 in)
Zebra loach Botia striata Botia striata.jpg 9 cm (3.5 in)
Redtail loach Yasuhikotakia modesta Yasuhikotakia modesta.jpg 25 cm (9.8 in)
Skunk loach Yasuhikotakia morleti Yasuhikotakia morleti.jpg 10 cm (3.9 in) formerly named Botia morleti
Yasuhikotakia splendida 10 cm (3.9 in)
Borneo hillstream loach Gastromyzon sp. Gastromyzon fasciatus.jpg 6–8 cm (2.4–3.1 in) Eats mainly algae. High oxygen level and water quality required in addition to a strong current
Tiger hillstream loach Sewellia lineolata Hillstream Loach.JPG 6 cm (2.4 in) Eats mainly algae. High oxygen level and water quality required in addition to a strong current
Butterfly hillstream loach Beaufortia kweichowensis Beaufortia kweichowensis.jpg 8 cm (3.1 in) Eats mainly algae. High oxygen level and water quality required in addition to a strong current

Live-bearers and killifish[edit]

Guppies and mollies
Common name Taxonomy Picture Size Remarks Temperature range pH range
Guppy Poecilia reticulata Guppy red male.jpg 5 cm (2.0 in) Many color and tail pattern varieties exist. They generally need a ratio of 1 male to 2 females or more. All guppies and mollies are hardy fish that tolerate lower oxygen levels and temperatures than most aquarium fish, give birth to live young, and readily breed in home tanks.
Endler's livebearer Poecilia wingei Poecilia reticulata 01.jpg 3.8 cm (1.5 in) Several color varieties have been bred. Will crossbreed with P. reticulata and the wild type has become rare.
Black molly Poecilia sphenops Molinezje black molly.JPG 5 cm (2.0 in)
Sailfin molly Poecilia latipinna Poecilia latipinna.jpg 5 cm (2.0 in) Gold and silver varieties commonly found; also thrive in brackish water
Dalmatian molly hybrid DalmationMolly.jpg 5 cm (2.0 in) The dalmatian molly is a hybrid color variation that can be generated by crossing some species of Poecilia, like P. sphenops and P. latipinna. The variety "Dalmatian" is spotted alike to a Dalmatian dog.
Lyretail Molly Variety LyretailMolly.jpg 5 cm (2.0 in) Lyretail Mollies are available in all of these species, can be cross bred with any species of Molly.
Platies and swordtails
Common name Taxonomy Picture Size Remarks Temperature range pH range
Southern platy Xiphophorus maculatus Xiphophorus maculatus.jpg Many color varieties exist
Variable platy Xiphophorus variatus Papagaienplaty.jpg Sometimes called Feeder platy because can be used to feed larger fish like Stingrays, Payara, Cichlids, Pickerel, Catfish, Sunfish, Arowanas, Gar, Arapaima, and other predator fish. Many color varieties exist
Green swordtail Xiphophorus hellerii Xiphophorus helleri 03.jpg Many color varieties exist
Other Livebearers, like Gambusia
Common name Taxonomy Picture Size Remarks Temperature range pH range
Largescale four-eyed fish Anableps anableps Anableps anableps qtl1.jpg
Pike topminnow Belonesox belizanus Belonesox belizanus Aquarium tropical du Palais de la Porte Dorée 10 04 2016.jpg
Cuban lima Limia vittata Limia vittata.jpg
Knife livebearer Alfaro cultratus Alfaro cultratus.jpg
Least killifish Heterandria formosa Dwarf Livebearer or Least Killifish (Heterandria formosa).jpg Not as common as other livebearers in the aquarium trade. One of the smallest fish in the world.
Tanganyika killifish Lamprichthys tanganicanus Lamprichthys tanganicanus.JPG Not actually a type of killifish but a livebearer.
Norman's lampeye Poropanchax normani Aplocheilichthys normani 3.jpg Not actually a type of killifish but a livebearer.
Celebes halfbeak Nomorhamphus liemi Nomorhamphus liemi liemi (Wroclaw zoo)-2.JPG 8 cm (3.1 in) All halfbeaks are sensitive to changes in water quality or temperature, swim at the water surface, do not compete well with larger fish, and may jump out of uncovered tanks. Difficult to breed in captivity, most halfbeaks sold are wild-caught.
Wrestling halfbeak Dermogenys pusilla Dermogenys pusilla.jpg 5 cm (2.0 in) Used in its native Southeast Asia as a fighting fish; males spar with their elongated lower jaws but rarely harm each other.
Forest halfbeak Hemirhamphodon pogonognathus Hemirhamphodon pogonognathus02.jpg 10 cm (3.9 in)
Common name Taxonomy Picture Size Remarks Temperature range pH range
Blue Lyretail Fundulopanchax gardneri Fundulopanchax gardneri.png 5 cm (2.0 in) Killifish of all species breed in captivity but are short-lived by nature; many species live for 1 year and breeding may be triggered by changes in water or temperature. They are best kept and bred in killifish-only aquaria.
Clown Killifish Epiplatys annulatus Epiplaty annulatus - Panchax à bandes.jpg 3.5 cm (1.4 in)
Bluefin Notho, Rachow's Notho, Rainbow Notho Nothobranchius rachovii Nothobranchius rachovii male.jpg 6 cm (2.4 in) Considered most beautiful freshwater fish by some killifish enthusiasts.
Striped panchax, Golden Wonder Aplocheilus lineatus Hechtlinge.jpg Golden Wonder is the more yellowish variant.
American Flagfish Jordanella floridae Jordanella floridae.jpg Native to SE United States
Argentine Pearl Austrolebias nigripinnis Austrolebias nigripinnis992.jpg
Golden Toppminnow Fundulus chrysotus Fundulus chrysotus.jpg
Northern Studfish Fundulus catenatus Fundulus catenatus.jpg
Red-seam Killifish Aphyosemion calliurum
Arabian Killifish Aphanius dispar

Labyrinth fish[edit]

Common name Taxonomy Picture Size Remarks Temperature range pH range
Dwarf gourami Trichogaster lalius Colisa lalia.jpg 5 cm (2.0 in) Suitable for small to mid-sized aquariums but cannot compete with more aggressive fish and males kept together may fight. Several color varieties available. Massive inbreeding has led to high rates of Dwarf gourami iridovirus (DGIV) in pet store fish.[15] Beautiful but short-lived at best.
Paradise fish Macropodus opercularis Paradise fish female and male 02.jpg 7.5 cm (3.0 in) One of the few freshwater aquarium fish that survive in cold water. Can live without aeration. Most common variety is the Blue Paradise.
Pygmy gourami, Sparkling gourami Trichopsis pumila Trichopsis pumila.jpg 3.8 cm (1.5 in) Often confused with the croaking gourami. Does not compete well with larger fish. Hunts and eats small shrimp.
Moonlight gourami Trichopodus microlepis Trichogaster microlepis.jpg 15 cm (5.9 in)
Snakeskin gourami Trichopodus pectoralis Snakeskin gourami.jpg 20 cm (7.9 in)
Siamese fighting fish (sometimes Betta, esp. US) Betta splendens Kampffisch betta splendenscele4.jpg 7.5 cm (3.0 in) Numerous color and fin pattern varieties. Betta is the name of the genus that includes more than 60 species other than the Siamese fighting fish. Multiple males in a tank will result in conflicts and possibly death. Females can be housed together in groups of 5+ in a tank, though they may become territorial and attack each other. Males have long flowing fins with vibrant colors, and females have shorter fins. This fish is best put with fish that do not nip fins, as the fins of the betta are easy to attack. They should also not be housed with other fish with long, flowing fins as the Betta may confuse it with another male, and attack. Minimum tank size for one male or female and maybe a few shrimp or snails is 5 gallons. Minimum tank size for a female betta sorority is 20 gallons.
Malay combtail Belontia hasselti Belont hasselt 100523-1755 sap.JPG 20 cm (7.9 in)
Slender betta Betta bellica 9 cm (3.5 in)
Betta burdigala 3.5 cm (1.4 in)
Scarlet betta Betta coccina Betta coccina "Jambi-Sumatra".JPG 4 cm (1.6 in)
Crescent betta Betta imbellis Betta imbellis (male) 20100512 2.jpg 6 cm (2.4 in)
Betta miniopinna 3.5 cm (1.4 in)
Toba betta Betta rubra 4 cm (1.6 in)
Betta simorum Betta simorum male1.jpg 9 cm (3.5 in)
Giant Pikehead Luciocephalus pulcher Luciocephalus pulcher (Gray, 1830).jpg 20 cm (7.9 in)
Parosphromenus phoenicurus Parosphromenus spec Langgam1.jpg 3 cm (1.2 in)
Chocolate gourami Sphaerichthys osphromenoides Sphaerichthys breeding.jpg 7 cm (2.8 in)
Pearl gourami Trichopodus leerii Fadenfisch mosaik männlich.jpg 11.5 cm (4.5 in)
Three spot gourami Trichopodus trichopterus Fadenfisch blau männlich (2010) 2.jpg 10 cm (3.9 in) Various color varieties each given a different name (blue gourami, gold gourami, and opaline gourami)
Croaking gourami Trichopsis vittata Trichopsis vittata LCK 8707.JPG 6.5 cm (2.6 in) Often confused with the pygmy gourami, but larger. May hunt and eat aquarium shrimp.
Giant gourami Osphronemus goramy Giant.gourami.arp.jpg 60 cm (24 in) Occasionally, some other gouramis are also referred to as "giant gouramis"
Other labyrinth fishes
Common name Taxonomy Picture Size Remarks Temperature range pH range
Kissing gourami Helostoma temminckii Helostoma temminkii 01.jpg 15 cm (5.9 in) The pink variety is more popular than the natural green one. They are called Kissing Gouramis because the seem to pucker their lips outwards. they require aquarium salt in the water or hard water
Climbing perch Anabas testudineus Pla mo-Thailand25.JPG 20 cm (7.9 in)
Leopard bush fish Ctenopoma acutirostre Ctenopoma acutirostre 1.JPG 15 cm (5.9 in)
African leaffish Polycentropsis abbreviata 8 cm (3.1 in)
Bornean leaffish Nandus nebulosus 12 cm (4.7 in)
Malayan leaffish Pristolepis fasciata Pristol fasci 100614-3518 awr.JPG 20 cm (7.9 in)
Common name Taxonomy Picture Size Remarks Temperature range pH range
Forest snakehead Channa lucius Channa lucius 2.jpg 40 cm (16 in)
Dwarf snakehead Channa gachua Channa gachua TH203 - W004.jpg 20 cm (7.9 in)
Emperor snakehead Channa marulioides 65 cm (26 in)
Giant snakehead Channa micropeltes Channa micropeltes,.jpg 130 cm (51 in)
Ocellated snakehead Channa pleurophthalma Channidae - Channa pleurophthalma.JPG 35 cm (14 in)
African snakehead Parachanna obscura Parachanna obscura - Aqua Porte Dorée 11.JPG 50 cm (20 in)


Common name Taxonomy Picture Size Remarks Temperature range pH range
Red rainbowfish Glossolepis incisus GlossolepisIncisus.JPG 9–13 cm (3.5–5.1 in) Almost all rainbowfish species are bred in captivity and wild populations may be protected.
Lake Wanam rainbowfish Glossolepis wanamensis Glossolepis wanamensis.jpg 9 cm (3.5 in)
Threadfin rainbowfish Iriatherina werneri Iriatherina Werneri-Yellow Finned Male.jpg 3–4 cm (1.2–1.6 in) Threadfins have very tiny mouths and cannot compete well with other fish for food. Keep in species only tanks or with small Pseudomugil (i.e.: gertrudae)
New Guinea rainbowfish Melanotaenia affinis 13 cm (5.1 in)
Western rainbowfish Melanotaenia australis 300 Melanotaenia australis Western rainbowfish Mitchell River NP VIII-2013.jpg 11 cm (4.3 in)
Boeseman's rainbowfish Melanotaenia boesemani Sunny1.jpg 10–13 cm (3.9–5.1 in)
Duboulayi's rainbowfish Melanotaenia duboulayi M duboulayi.jpg 13–15 cm (5.1–5.9 in) a.k.a. Crimson-Spotted rainbowfish
Australian rainbowfish Melanotaenia fluviatilis Australian rainbow.jpg 13–15 cm (5.1–5.9 in)
Lake Tebera rainbowfish Melanotaenia herbertaxelrodi Regenbogenfisch im Zooaquarium Berlin.jpg 9 cm (3.5 in)
Lake Kutubu rainbowfish Melanotaenia lacustris Melanotaenia lacustris thomnight 001.jpg 12 cm (4.7 in)
Lake Kurumoi rainbowfish Melanotaenia parva Melanotaenia parva male.jpg 7.5–8 cm (3.0–3.1 in) a.k.a. Flame rainbowfish
Neon rainbowfish Melanotaenia praecox Dwarf neon rainbows.jpg 6–7.5 cm (2.4–3.0 in) A good beginner fish, but sensitive to water quality. Peaceful and very bold; for example it is unafraid of gravel cleaners and algae scrubbers. It is relatively tolerant of other fish chasing and/or bulling it.
Eastern rainbowfish Melanotaenia splendida splendida Eastern Rainbowfish 01.jpg 13–15 cm (5.1–5.9 in)
Banded rainbowfish Melanotaenia trifasciata Banded rainbowfish Melanotaenia trifasciata.jpg 13 cm (5.1 in)
Celebes rainbow Marosatherina ladigesi Marosatherina ladigesi.jpg 8 cm (3.1 in)
Forktail blue-eye Pseudomugil furcatus Pseudomugil furcatus m Aquarium DG.jpg 4–5 cm (1.6–2.0 in) An active species. Requires space to swim; not suitable for nano tanks in spite of its small size.
Spotted blue-eye Pseudomugil gertrudae Pseudomugil gertrudae ARUII Maennchen.jpg 3–4 cm (1.2–1.6 in) Often recommended for nano tanks. A schooling fish (keep in groups). Males do spectacular displays with their expanded dorsal and anal fins.
Pacific blue-eye Pseudomugil signifer 052fishcropped.jpg 3.5–7 cm (1.4–2.8 in)
Delicate blue-eye Pseudomugil tenellus 4–5.5 cm (1.6–2.2 in)
Madagascar rainbowfish Bedotia madagascariensis Bedotia geayi 1.jpg 7.5–8 cm (3.0–3.1 in)

Gobies and sleepers[edit]

Common name Taxonomy Picture Size Remarks Temperature range pH range
Empire gudgeon Hypseleotris compressa Hypseleotris compressa.jpg 12 cm (4.7 in) Omnivorous. Sexually dimorphic—males much larger and brighter-colored than females.
Purple sleeper gudgeon Mogurnda mogurnda Mogurnda mogurnda.png 20 cm (7.9 in) Sometimes called purple sleeper goby. Not a true goby, a gudgeon. Requires a very large tank.
Peacock gudgeon Tateurndina ocellicauda Tateurndina ocellicauda male DG.jpg 7.5 cm (3.0 in) Sometimes called peacock goby, but a gudgeon. Will breed in home tanks. Shy but territorial. Pairs hold small territories around caves or pots and display to neighbors. Best kept in a species tank or with very small peaceful fish, to enjoy its beautiful appearance and interesting behavior.
Black toraja goby Mugilogobius sarasinorum
Bumblebee goby Brachygobius doriae Brachygobius doriae.jpg 4 cm (1.6 in) Native to costal streams and estuaries; keep in brackish water or add crushed coral to water. May only eat live food. Territorial; keep in groups of 6+ to diffuse aggression between males.
Knight goby Stigmatogobius sadanundio Babka nakrapiana - Podwodne Królestwo.jpg 9 cm (3.5 in)
Rainbow stiphodon Stiphodon ornatus Stiphodon ornatus.jpg 5 cm (2.0 in)
Cobalt blue goby Stiphodon semoni align="center" align="center" |4–5 cm (1.6–2.0 in)
Sicyopus zosterophorus Sicyopus zosterophorus.jpg 4–4.5 cm (1.6–1.8 in)
Bearded worm goby Taenioides cirratus 30 cm (12 in)
Marbled goby Oxyeleotris marmorata Oxyel marmor 080425 7661 tdp.jpg 30–65 cm (12–26 in)
Crazy fish Butis butis Butis butis (Hamilton, 1822).jpg 15 cm (5.9 in)
Rhinogobius duospilus Rhinogobius duospilus.jpeg
Dragon goby, Violet goby Gobioides broussonnetii Gobioides broussonnetii - Gobie violet - Aqua Porte Dorée 13.JPG
Striped sleeper goby Dormitator maculatus Fat Sleeper (Dormitator maculatus).jpg

Sunfish and relatives[edit]

Common name Taxonomy Picture Size Remarks Temperature range pH range
Pygmy sunfish Elassomatidae Elassoma Gilberti male in breeding colors.jpg 4 cm (1.6 in) Suits smaller tanks. May only accept live or frozen foods.
Blackbanded sunfish Enneacanthus chaetodon Enneacanthus chaetodon 02.jpg 10 cm (3.9 in) Relatively peaceful, small sunfish.
Blue-spotted sunfish Enneacanthus gloriosus Enneacanthus gloriosus.jpg 10 cm (3.9 in) Relatively peaceful, small sunfish.
Redbreast sunfish Lepomis auritus Lepomis auritus.jpg 30 cm (12 in)
Green sunfish Lepomis cyanellus Green sunfish.JPG 25 cm (9.8 in) Likely the most aggressive sunfish. Difficult to keep with other green sunfishes, other sunfishes, or even other perciform fishes in general unless kept in very spacious aquaria or ponds. Like many fishes, more tolerant of distantly related species (i.e. catfishes and minnows), if too large to be eaten. Very aware of environment outside of aquarium, making it an engaging "wet pet." Accepts a variety of foods (flakes, pellets, krill, brine shrimp, bloodworms, and live prey).
Orangespotted sunfish Lepomis humilis Orangespottednctc.png 15 cm (5.9 in) Among the less aggressive of the sunfishes.
Pumpkinseed Lepomis gibbosus Lepomis gibbosus PAQ.jpg 28 cm (11 in) One of the more aggressive sunfishes. Good at preying on snails.
Warmouth Lepomis gulosus Warmouth Sunfish (Lepomis gulosus) (2497915731).jpg 30 cm (12 in)
Bluegill Lepomis macrochirus Bluegill (Lepomis macrochirus).jpg 41 cm (16 in) Fairly aggressive, but prefers to live in shoals.
Dollar sunfish Lepomis marginatus Lepomis marginatus UMFS 2014 1.JPG 12 cm (4.7 in)
Longear sunfish Lepomis megalotis Lepomis megalotis (Longear Sunfish) (20396406).jpg 24 cm (9.4 in)
Redear sunfish Lepomis microlophus Redear Sunfish 002.jpg 40 cm (16 in) Also known as shellcracker for its ability to prey on snails.
Redspotted sunfish Lepomis miniatus Lepomis miniatus 2.jpg 20 cm (7.9 in) Formerly considered conspecific with the spotted sunfish.
Northern sunfish Lepomis peltastes Lepomis megalotis 2.jpg 13 cm (5.1 in) Until recently considered conspecific with the longear sunfish.
Spotted sunfish Lepomis punctatus FMIB 51023 Chinquapin Perch.jpeg 10 cm (3.9 in) A fairly peaceable sunfish.

Other fish[edit]

Common name Taxonomy Picture Size Remarks Temperature range pH range
Gray bichir, Senegal bichir, or dinosaur bichir Polypterus senegalus Polypterus senegalus senegalus headstand.jpg 70.0 cm (27.6 in) maximum length[16]40.0 cm (16 in) in captivity[17] This species is known for predatory behavior toward tankmates. 25–28 °C (77–82 °F)[16] 6.0-8.0[16]
Ornate bichir Polypterus ornatipinnis Polypterus-ornatipinnis.jpg 60 cm (24 in) maximum length[18]   26–28 °C (79–82 °F)[18] 6.0–8.0
Retropinnis bichir Polypterus retropinnis 34.0 cm (13.4 in)[19]   26–28 °C (79–82 °F) 6.5–7.5
Barred bichir Polypterus delhezi Polypterus delhezi 2.jpg 35 cm (14 in) 24–30 °C (75–86 °F) 6–8
Saddled bichir Polypterus endlicheri Polypterus endlicherii.jpg 63 cm (25 in)[20] 22–27 °C (72–81 °F) 6–8
Reedfish Erpetoichthys calabaricus Akwa19 reedfish.jpg 31.4 cm (12.4 in) at maturity, 37 centimetres (15 in) maximum length[21] Nocturnal, can slither around out of water as long as they stay wet. 22–28 °C (72–82 °F)[21] 6.0–8.0[21]
Hingemouth Phractolaemus ansorgii 25 cm (9.8 in)
Blunt-jawed elephantnose Campylomormyrus tamandua Campylomormyrus tamandua.png 40 cm (16 in)
Peters' elephant nose Gnathonemus petersii Gnathonemus petersii by OpenCage.jpg 22.5 cm (8.9 in)
African butterflyfish Pantodon buchholzi Pantodon buchholzi.jpg 12 cm (4.7 in)
Aba aba Gymnarchus niloticus Gymnarchus 007.jpg 120 cm (47 in)
Reticulated knifefish Papyrocranus afer 80 cm (31 in)
African brown knifefish Xenomystus nigri Xenomystus nigri 1.JPG 30 cm (12 in)
Clown knifefish Chitala ornata Chitala ornata (Zoo Brno, Czech Republic).jpg
Asian arowana Scleropages formosus Scleropages formosus Prague 2012 1.jpg 90 cm (35 in)
Silver arowana Osteoglossum bicirrhosum Osteoglossum bicirrhosum.JPG 90 cm (35 in)
Freshwater pipefish Doryichthys martensii 15 cm (5.9 in)
African freshwater pipefish Enneacampus ansorgii 14 cm (5.5 in)
Fire eel Mastacembelus erythrotaenia Ildaal.jpg 100 cm (39 in)
Tire track eel Mastacembelus armatus Tire Track Eel.jpg 90 cm (35 in)
Spotfinned spiny eel Macrognathus siamensis Macrognathus siamenis.jpg 30 cm (12 in)
Half-banded spiny eel Macrognathus circumcinctus 20 cm (7.9 in)
Lesser spiny eel Macrognathus aculeatus 38 cm (15 in)
Freshwater sole Brachirus panoides Synaptura panoides - 1866-1872 - Print - Iconographia Zoologica - Special Collections University of Amsterdam - UBA01 IZ14000237.tif 20 cm (8 in)
Freshwater needlefish Xenentodon cancila Xenentodon cancila (Wroclaw zoo)-1.JPG 35 cm (14 in)
Javanese ricefish Oryzias javanicus Oryzias javanicus.jpg 3.5 cm (1.4 in)
Daisy's Ricefish Oryzias woworae Oryzias woworae.jpg 3 cm (1.2 in)
Indian glassy fish Parambassis ranga Parambassis ranga 2.jpg 8 cm (3.1 in)
Amazon leaffish Monocirrhus polyacanthus Monocirrhus polyacanthus.jpg 8 cm (3.1 in)
Gymnochanda filamentosa 3.8 cm (1.5 in)
Indonesian tigerfish Datnioides microlepis Tigerfish037.JPG 45 cm (18 in)
Silver tigerfish Datnioides polota Datnioides polota (Hamilton, 1822).jpg 30 cm (12 in)
Banded archerfish Toxotes jaculatrix Toxotes jaculatrix Porte dorée.jpg 30 cm (12 in)
Spotted scat Scatophagus argus Scatophagus argus (Wroclaw zoo)-2.JPG 20 cm (7.9 in)
Green spotted puffer Dichotomyctere nigroviridis Tetraodon nigroviridis 1.jpg 15 cm (5.9 in) often sold as freshwater fish, but this species actually thrives in brackish water and may even require saltwater when reaches adulthood
Humpback Puffer Pao palembangensis 20 cm (7.9 in)
Red-tail dwarf puffer Carinotetraodon irrubesco Carinotetraodon irrubesco male.JPG 4.5 cm (1.8 in)
Golden puffer Auriglobus modestus 10 cm (3.9 in)
Figure 8 pufferfish Tetraodon biocellatus Tbiocellatus.jpg 6 cm (2.4 in) often sold as freshwater fish, but this species prefers brackish water
Dwarf pufferfish Carinotetraodon travancoricus Carinotetraodon travancoricus 2.JPG 2.9 cm (1.1 in)
Fahaka puffer Tetraodon lineatus TetraodonLineatus.JPG 1-foot 5 inches
Giant freshwater pufferfish Tetraodon mbu Juvenile Mbu pufferfish.jpg 75 cm (30 in) This fish also occurs in estuaries.
Congo pufferfish Tetraodon miurus Tetraodon miurus.jpg 15 cm (5.9 in)
Amazon puffer Colomesus asellus Assel-Kugelfisch.jpg
West African lungfish Protopterus annectens Gőtehal-2.jpg 100 cm (39 in)
Spotted lungfish Protopterus dolloi Dolloi.jpg 130 cm (51 in)
South American lungfish Lepidosiren paradoxa Lepidosiren paradoxa Aquarium tropical du Palais de la Porte Dorée 10042016 1.jpg 125 cm (49 in)
Ocellate river stingray Potamotrygon motoro Pfauenaugen-Stechrochen - Ocellate river stingray - Potamotrygon motoro.jpg
Black devil stingray Potamotrygon leopoldi Potamotrygon leopoldi Prague 2011 2.jpg
Black ghost knifefish Apteronotus albifrons Apteronotus albifrons Aquarium tropical du Palais de la Porte Dorée 10 04 2016 1.jpg 20 in Not to be confused with the featherback "knifefish" of the Bonytongue group (see above) Very aggressive to other knifefish, but otherwise peaceful. 23-28C (73-82F) 6.0-8.0
Brown ghost knifefish Apteronotus leptorhynchus Very hard to feed it anything but live food
Electric eel Electrophorus electricus Electric-eel.jpg Despite the name, this is not an "eel" but rather a huge knifefish; illegal to possess in some areas; dangerous; very large adult size
Glass knifefish Eigenmannia virescens Eigenmannia virescens 000.jpg
Sterlet Acipenser ruthenus Acipenser ruthenus Prague Vltava 1.jpg
Shovelnose Sturgeon Scaphirhynchus platorynchus Shovelnose Sturgeon 01-19-08 1241.jpg
Spotted Gar Lepisosteus oculatus Lepisosteus oculatus1.jpg 70 cm (27.5 in)
Longnose Gar Lepisosteus osseus Lepisosteus osseus 1.jpg
Florida Gar Lepisosteus platyrhincus Lepisosteus platyrhincus.JPG 70 cm (27.5 in)
Alligator Gar Atractosteus spatula Alligator Gar (Atractosteus spatula) (3149748488).jpg 300 cm (118 in)
Cuban Gar Atractosteus tristoechus MANJUARI-2.jpg 200 cm (78.5 in)
Tropical Gar Atractosteus tropicus PuertoAristaSanctuary04.JPG 150 cm (59 in)
Freshwater blenny Salaria fluviatilis Blennie d'eau douce-Salaria fluviatilis.JPG
Pickerel Esox americanus Esox americanus vermiculatus.jpg
Brook stickleback Culaea inconstans Culaea inconstans.jpg
European Perch Perca fluviatilis Perca fluviatilis2.jpg
Banded darter Etheostoma zonale
Gilt darter Percina evides Percina evides.jpg
Orangethroat darter Etheostoma spectabile Orangethroat darter male.jpg
Rainbow darter Etheostoma caeruleum Etheostoma caeruleum.jpg
Splendid darter Etheostoma barrenense

See also[edit]



  1. ^ a b c "Aspidoras fuscoguttatus summary page". FishBase. Retrieved 2017-12-12.
  2. ^ "Aspidoras lakoi summary page". FishBase. Retrieved 2017-12-12.
  3. ^ a b c "Aspidoras rochai summary page". FishBase. Retrieved 2017-12-14.
  4. ^ a b "Aspidoras pauciradiatus summary page". FishBase. Retrieved 2017-12-14.
  5. ^ "Corydoras splendens summary page". FishBase. Retrieved 2017-12-11.
  6. ^ Fishbase:haraldschultzi
  7. ^ "Corydoras panda summary page". FishBase. Retrieved 2017-12-11.
  8. ^ Fishbase:sterbai
  9. ^ Fishbase:thilineatus
  10. ^ "Everything You Need to Know About the Bristlenose Catfish". The Spruce. Retrieved 2018-01-26.
  11. ^ a b c "Phractocephalus hemioliopterus (Red-tail Catfish)". Seriously Fish. Retrieved 2019-02-02.
  12. ^ "Hyphessobrycon megalopterus summary page". FishBase. Retrieved 2018-12-26.
  13. ^ "Hyphessobrycon herbertaxelrodi summary page". FishBase. Retrieved 2018-12-26.
  14. ^ "Abramites hypselonotus summary page". FishBase. Retrieved 2018-12-26.
  15. ^ "Trichogaster lalius (Dwarf Gourami)". Seriously Fish. Retrieved 2020-02-18.
  16. ^ a b c "Polypterus senegalus summary page". FishBase. Retrieved 2017-12-12.
  17. ^ "Polypterus (bichirs)". Retrieved 2018-01-26.
  18. ^ a b "Polypterus ornatipinnis summary page". FishBase. Retrieved 2017-12-12.
  19. ^ "Polypterus retropinnis summary page". FishBase. Retrieved 2017-12-12.
  20. ^ "Polypterus endlicheri summary page". FishBase. Retrieved 2019-03-02.
  21. ^ a b c "Erpetoichthys calabaricus summary page". FishBase. Retrieved 2017-12-12.