Scientific Name
Raniceps raninus

Common Name
Tadpole fish

Biology
Dorsal spines (total): 0; Anal spines: 0. Head depressed. First dorsal fin poorly developed, with only three short rays. Color uniformly dark brown or bluish brown; the lips and the distal areas of all fins paler except for the pectorals.

Classification

Classified By

Linnaeus, 1758

Class

Ray-finned fishes (Actinopterygii)

Order

Cods (Gadiformes)

Family

Cods and haddocks (Gadidae)

Distribution

Region

Northeast Atlantic

Distribution

Northeast Atlantic: Trondheim on the Norwegian coast to the Bay of Biscay; also around the British Isles.

Range

68°N - 44°N, 11°W - 13°E

Environment

Climate

Temperate

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

100 m

Zone

demersal

Environment

Marine; brackish; demersal; oceanodromous (Ref. 51243); depth range 0 - 100 m (Ref. 35388), usually 10 - 20 m

Trophic Level

3.77 s.e. 0.56 Based on food items.

Occurs in Marine / Salt water

True

Occurs in Brackish water

True

Occurs in Fresh Water

False

Occurs on Reefs

False

Is kept in Aquariums

True

Physical Size and Genetics

Maximum Length

27.5 cm

Common Length

20.0 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

Fisheries: of no interest; aquarium: public aquariums

Vulnerability

Low to moderate vulnerability (27 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