| Chionobathyscus | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Perciformes |
| Family: | Channichthyidae |
| Genus: | Chionobathyscus Andriashev & Neyelov, 1978 |
| Species: | C. dewitti |
| Binomial name | |
| Chionobathyscus dewitti Andriashev & Neyelov, 1978 | |
Chionobathyscus dewitti is a species of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. This species is found in the Southern Ocean.
Chionobathyscus was first described as a genus in 1978 by the ichthyologists Anatoly Petrovich Andriyashev and Alexei Vladimovich Neyelov [1] when they were describing the only species in this genus Chionobathyscus dewitti, the type of which had been collected in the Eastern Antarctic Ocean at 67°31'S, 33°05'W. [2] The genus name is a compound of chionos which means "snow", although in this case this is alluding to the relationship of this taxon with the genus Chionodraco , and bathyscus which means "inhabitant of the deep", a reference to the depths at which this species is found. The specific name honours the American ichthyologist, marine biologist and oceanographer Hugh Hamilton DeWitt in recognition of his work on Antarctic fishes. [3]
Chionobathyscus dewitti has a vestigial spine on the snout, really just a small knob. There are 3 or 4 branched spines on the operculum. There are 3 lateral lines which do not have bony plates. The pelvic fin is elongated and has thickened skin at their tips. The first and second dorsal fins are clearly separated. Within the dorsal fin there are 5 or 6 spines and 39 or 40 soft rays while the anal fin has 33 or 34 soft rays. They are an overall gray colour, paler centrally, with juveniles being a lighter colour than adults. There body is marked with 5 wide bars and the fins are pale except for the rear parts of the pectoral and caudal fins. [4] This species attains a maximum total length of 60 cm (24 in). [5]
Chionobathyscus dewitti is found in the Southern Ocean and is probably circum-Antarctic on the continental shelf and slope. It is a bathydemersal species with a depth range of 500 to 2,000 m (1,600 to 6,600 ft). The adults feed largely on fishes krill. [5] They have been caught in prespawning condition in February. [4]
Chionodraco hamatus is a species of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. It is found in the Southern Ocean.
Champsocephalus is a genus of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. They are native to the Southern Ocean.
Gerlachea is a monotypic genus of marine ray-finned fish belonging to the family Bathydraconidae, the Antarctic dragonfishes, its only species is Gerlachea australis. It is found at depths of from 200 to 670 metres over the Antarctic continental shelf. This species is the only known member of its genus.
The ploughfish is a species of Antarctic dragonfish native to the Southern Ocean around Antarctica. It is found at depths of from 0 to 550 m over the Antarctic continental shelf. This species is the only known member of its genus.
Psilodraco is a monotypic genus of marine ray-finned fish belonging to the family Bathydraconidae, the Antarctic dragonfishes, its only species is Psilodraco breviceps. These fishes are native to the Southern Ocean.
Vomeridens is a monotypic genus of marine ray-finned fish belonging to the family Bathydraconidae, the Antarctic dragonfishes, its only species is Vomeridens infuscipinnis. These fishes are native to the Southern Ocean.
Chaenodraco wilsoni, the spiny icefish, is a species of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. It is native to the Southern Ocean. This species is the only known member of its genus. It is of minor interest to commercial fisheries.
Channichthys is a genus of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. They are native to the Southern Ocean.
Chionodraco is a genus of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. They are found in the Southern Ocean.
Cryodraco is a genus of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. They are found in the Southern Ocean. While C. antarcticus has minor commercial importance, C. atkinsoni and C. pappenheimi are of no interest to commercial fisheries.
Dacodraco is a monotypic genus of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes, its only member is Dacodraco hunteri. This species is found in the Southern Ocean.
Pagetopsis is a genus of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. The species in this genus are found in the Southern Ocean.
Pseudochaenichthys is a monotypic genus of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. Its only member is Pseudochaenichthys georgianus, the South Georgia icefish, which is found in the Southern Ocean.
Nototheniops is a genus of marine ray-finned fishes belonging to the family Nototheniidae, the notothens or cod icefishes. The species in this genus are native to the Southern Ocean.
Pagetopsis macropterus species of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. This species is found in the Southern Ocean.
Pagetopsis maculata is a species of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. It is found in the Southern Ocean. It is of no interest to commercial fisheries.
Chionodraco myersi, the Myer's icefish, is a species of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. It is found in the Southern Ocean.
Cryodraco atkinsoni is a bathydemersal species of marine ray-finned fish belonging to the family Channichthyidae, the crocodile icefishes. It is endemic to the waters of the eastern part of the Southern Ocean.
Gvozdarus svetovidovi, the naked-head toothfish, is a species of marine ray-finned fish belonging to the family Nototheniidae, the notothens or cod icefishes. It is found in the Ross and Cooperation Seas, probably south of the Antarctic Polar Front from pelagic waters down to depths of 550 m (1,804 ft), though it is normally found in a pelagic environment.
Notothenia trigramma is a species of marine ray-finned fish, belonging to the family Nototheniidae, the notothens or cod icefishes. It occurs in the southwestern Atlantic Ocean.