Channichthys richardsoni

From Wikipedia, the free encyclopedia

Channichthys richardsoni
Chan richardsoni holotype.jpg
Illustration of the holotype
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Channichthyidae
Genus: Channichthys
Species:
C. richardsoni
Binomial name
Channichthys richardsoni
, 2011

Channichthys richardsoni, the robust icefish, is a demersal species of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. It is endemic to the shelf waters of the Kerguelen Islands in the Southern Ocean. It lives at depths of 126–310 metres (413–1,017 ft).[1]

Fishbase treats it as a valid species but Catalog of Fishes treats it as a junior synonym of C. rhinoceratus.[2][3]

This heavy-bodied species is dark grey to brown in coloration and has 3-4 dark cross bars on its body. Narrow dark stripes (up to 6) are present on the caudal fins and pelvic fins.[1]

It is distinguished from other Channichthys species (to whom it is very similar with) by the moderate size of its eyes, number of gill rakers on the lower arch (6-15), longer snout (approximately equal to half the length of the head) and other characteristics, such as the relatively robust body compared to other Channichthys species (which gave this species its common name) and relatively small eye (in some specimens just reaching 33% of snout length).[1]

It is a piscivorous (fish-eating) species. Maturity is reached at 29–31 centimetres (11–12 in) TL in females. Spawning occurs from autumn to early winter.[1]

This species is of no interest to commercial fisheries.[3]

References[]

  1. ^ a b c d Shandikov, G.A.; V. Karazin (2011). "Channichthys richardsoni sp. n. , a new Antarctic icefish (Perciformes: Notothenioidei: Channichthyidae) From the Kerguelen Islands area, Indian sector of the Southern Ocean" (PDF). Visnyk Charkivs'koho Universytetu Imeni V. N. Karazina, Ser. Biologija, Charkiv. 14 (971): 125–134.
  2. ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Channichthys". Catalog of Fishes. California Academy of Sciences. Retrieved 18 October 2021.
  3. ^ a b Froese, Rainer; Pauly, Daniel (eds.) (2021). "Channichthys richardsoni" in FishBase. June 2021 version.



Retrieved from ""