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Baryancistrus xanthellus L-18
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Loricariidae
Subfamily: Hypostominae
Tribe: Ancistrini
Genus: Baryancistrus
Rapp Py-Daniel, 1989

Baryancistrus is a genus of freshwater Loricariid catfish. They inhabit regions of the Amazon river in countries such as Brazil and Venezuela.

Most Baryancistrus are differentiated from other related genera by a membrane connecting their dorsal fin and adipose fin, not present in most other genera.[1]

The species of this genus are mainly herbivores and detritivores, but may take other foods too. Most have probably not been bred in captivity. It is difficult to sex these fish, including adult specimen. These fish are mainly nocturnal, but will also emerge from their hiding places during the day, after some time getting accustomed to the aquarium. They will benefit from plenty of hiding places.


There are currently six recognized species in this genus: [2]

List of Baryancistrus sp. L-numbers[edit]

Though there are many types of fish described as Baryancistrus, there are many that yet to be given a true scientific designation, and are only referred to under the L-number system, including the Gold Nuggets. Here is a list of Baryancistrus by L-number designation. The common name and scientific name are included when available, though some of these fish are only commonly referred to by their L-number. For those fish without a scientific name, they are assumed to be Baryancistrus sp.

L-number(s) or LDA Common name(s) Scientific name
L003 Kieser pleco
L018, L085 Gold Nugget pleco Baryancistrus xanthellus
L026 Baryancistrus niveatus
L047 Magnum pleco, Mango pleco Baryancistrus chrysolomus
L081 Gold Nugget pleco Baryancistrus xanthellus
L115, L248 Mega snowball pleco
L142, LDA33 Big White Spot pleco
L177 Iriri Gold Nugget pleco Baryancistrus xanthellus
L200* Baryancistrus demantoides
L239 Blue Panaque Baryancistrus beggini
LDA60 gold nugget Baryancistrus xanthellus

* Note: L200 is also used to refer to Hemiancistrus subviridis, another Loricariid that is very similar in appearance.

See also[edit]


  1. ^ Werneke, David C.; Sabaj, Mark H.; Lujan, Nathan K.; Armbruster, Jonathan W. (2005). "Baryancistrus demantoides and Hemiancistrus subviridis, two new uniquely colored species of catfishes from Venezuela (Siluriformes: Loricariidae)" (PDF). Neotropical Ichthyology. Sociedade Brasileira de Ictiologia. 3 (4): 533–542. doi:10.1590/S1679-62252005000400011. 
  2. ^ Froese, Rainer, and Daniel Pauly, eds. (2011). Species of Baryancistrus in FishBase. December 2011 version.