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Triangular rockcod (Gobionotothen acuta) fish species and information / pictures of Triangular rockcod - Gobionotothen acuta

Triangular rockcod (Gobionotothen acuta) fish species information

Scientific Name
Gobionotothen acuta

Common Name
Triangular rockcod

Biology
Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 28-30; Anal soft rays: 28 - 31. Body marbled and with three or four short, broad, dark bars on upper parts of sides. Dorsally rays sometimes with a series of small spots, caudal fin faintly barred (Ref. 11892).

Classification

Classified By

G?nther, 1880

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Cod icefishes (Nototheniidae)

Distribution

Region

Southern Ocean

Distribution

Southern Ocean: French South Territory, Heard Islands and Kerguelen Plateau.

Range

46°S - 54°S

Environment

Climate

Polar

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

30 m

Depth To - meters

300 m

Zone

demersal

Environment

Marine; demersal; depth range 30 - 300 m (Ref. 5179), usually 30 - 140 m (Ref. 11892)

Trophic Level

3.29 s.e. 0.41 Based on size and trophs of closest relatives

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

35.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5312 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Moderate to high vulnerability (49 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated