Alcichthys elongatus

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Alcichthys elongatus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Scorpaeniformes
Family: Cottidae
Genus: Alcichthys
Species: A. elongatus
Binomial name
Alcichthys elongatus
(Steindachner, 1881)
  • Centridermichthys elongatus Steindachner, 1881
  • Centridermichthys alcicornis Herzenstein, 1890
  • Alcichthys alcicornis (Herzenstein, 1890)
  • Bero zanclus Snyder, 1911
  • Alcichthys okiensis Mori, 1956

Alcichthys elongatus is a fish in the family Cottidae (sculpins),[2] and the only valid member of its genus.[3] It was described by Franz Steindachner in 1881.[4] It is a marine, boreal fish which is known from the northwestern Pacific Ocean, including the Sea of Okhotsk and Japan. It dwells at a depth range of 15 to 269 metres (49 to 883 ft), and inhabits rocky reefs.[5] Males can reach a maximum total length of 44 centimetres (17 in), but more commonly reach a TL of 31.5 centimetres (12.4 in). The maximum recorded weight is 1 kilogram (2.2 lb).[2]

A. elongatus aggregates during the winter.[5] In the Russian Federation, its spawning season has been reported to occur from April to June.[6] It is preyed on by Gadus macrocephalus (the Pacific cod), Hemitripterus villosus, and Hexagrammos otakii.[7] Its own diet consists of bony fish such as Engraulis japonicus and Sardinops sagax, crabs such as Erimacrus isenbeckii, Oregonia gracilis and spider crabs, euphausiids such as Euphausia pacifica, as well as cephalopods, polychaetes, and debris.[8]

Due to its wide distribution in its region, as well as a lack of known threats, save for rare occasions in which it is caught in gill nets, the IUCN redlist currently lists A. elongatus as least concern.[2]


  1. ^ Synonyms of Alcichthys elongatus at
  2. ^ a b c Alcichthys elongatus at
  3. ^ Species listing for Alcichthys at
  4. ^ Steindachner, F., 1881 [ref. 4231] Ichthyologische Beiträge (X). Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 83 (1. Abth.): 179-219, Pls. 1-8.
  5. ^ a b Alcichthys elongatus at the IUCN redlist.
  6. ^ Spawning for Alcichthys elongatus at
  7. ^ Organisms Preying on Alcichthys elongatus at
  8. ^ Food items reported for Alcichthys elongatus at