Cutthroat trout (Oncorhynchus clarkii clarkii) fish species and information / pictures of Cutthroat trout - Oncorhynchus clarkii clarkii

Cutthroat trout (Oncorhynchus clarkii clarkii) fish species information

Scientific Name
Oncorhynchus clarkii clarkii

Common Name
Cutthroat trout

Biology
Prefers relatively small streams, with gravel bottoms and gentle gradients. Spawning adults migrate from the sea into streams to spawn (Ref. 27547). The young fish usually stay in the stream for a year or two before entering the sea, but some populations never got to sea at all. In rare cases, some individuals of sea-going populations, may remain in fresh water for as long as eight years (Ref. 28866, 28869). Feeds on small fishes, crustaceans, and insects (Ref. 4925). The flesh is orange-red and of excellent flavor (Ref. 27547). Utilized fresh and eaten fried, broiled, and baked (Ref. 9988). This species does not compete well with other fish, tends to hybridize, and is unable to withstand fishing pressure = depletion of stocks.

Classification

Classified By

Richardson, 1836

Class

Ray-finned fishes (Actinopterygii)

Order

Salmons (Salmoniformes)

Family

Salmonids (Salmonidae)

Distribution

Region

Eastern Pacific

Distribution

Eastern Pacific: northern parts of Prince William Sound, Alaska, south to the Eel River in northern California, USA and is found in most streams emptying into the Pacific. Widely introduced into various streams and lakes within its natural range, as well as into a few lakes in eastern North America. In some streams it may be the most numerous sport fish present, while other streams support only small populations. At least 14 subspecies have been historically recognized (Ref. 5723).

Range

61°N - 40°N

Environment

Climate

Temperate

Water Temperature From

Unknown °C

Water Temperature To

23 °C

Depth From - meters

0 m

Depth To - meters

200 m

Zone

demersal

Environment

Marine; freshwater; brackish; demersal; anadromous (Ref. 27547); depth range 0 - 200 m (Ref. 50610)

Trophic Level

3.17 s.e. 0.43 Based on diet studies.

Occurs in Marine / Salt water

True

Occurs in Brackish water

True

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

True

Physical Size and Genetics

Maximum Length

99.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: commercial; aquaculture: commercial; gamefish: yes; aquarium: public aquariums

Vulnerability

Moderate vulnerability (44 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (tm=2-3; tmax=10; Fec=226)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated