Naked-head toothfish (Gvozdarus svetovidovi) fish species and information / pictures of Naked-head toothfish - Gvozdarus svetovidovi

Naked-head toothfish (Gvozdarus svetovidovi) fish species information

Scientific Name
Gvozdarus svetovidovi

Common Name
Naked-head toothfish

Biology
Dorsal spines (total): 7; Dorsal soft rays (total): 30; Anal spines: 0; Anal soft rays: 31; Vertebrae: 51. Light brown ventrally, head, dorsum and sides of trunk dark. Dorsal fins lighter, membranes transparent. Pelvic and anal fins light, mouth and gill cavity dark (Ref. 11892).

Classification

Classified By
Balushkin, 1989
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Cod icefishes (Nototheniidae)

Distribution

Region
Southern Ocean
Distribution
Southern Ocean: Ross and Cooperation seas. Probably found south of the Antarctic Polar Front.
Range
65°S - 74°S

Environment

Climate
Polar
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
550 m
Depth To - meters
550 m
Zone
pelagic-oceanic
Environment
Marine; pelagic-oceanic; depth range 550 - 550 m (Ref. 5179)
Trophic Level
4.5 s.e. 0.80 Based on food items.
Occurs in Marine / Salt water
True
Occurs in Brackish water
False
Occurs in Fresh Water
False
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
100.0 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 0.7500 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: of no interest
Vulnerability
High to very high vulnerability (69 of 100)
Resilience
Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated