Scientific Name
Taratretis derwentensis

Common Name
Derwent flounder

Biology
Dorsal soft rays (total): 69-80; Anal soft rays: 50 - 59. Body deep (42-51% SL). Snout not distinctly extended. Mouth small, oblique. Scales very small, rather firmly attached; ctenoid on both sides, covering all of head. Pectoral fin rays on right side 8-11, left 7-9. Caudal fin rays 14-16 (Ref. 33839).

Classification

Classified By

Last, 1978

Class

Ray-finned fishes (Actinopterygii)

Order

Flatfishes (Pleuronectiformes)

Family

Righteye flounders (Pleuronectidae)

Distribution

Region

Southwest Pacific

Distribution

Southwest Pacific: southern Australia, from New South Wales to South Australia and Tasmania.

Range

Unknown

Environment

Climate

Temperate

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

3 m

Depth To - meters

50 m

Zone

demersal

Environment

Marine; demersal; depth range 3 - 50 m (Ref. 9563)

Trophic Level

3.04 s.e. 0.24 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

12.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low vulnerability (21 of 100)

Resilience

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated