Scientific Name
Cottus gulosus

Common Name
Riffle sculpin

Biology
Inhabits sand and gravel riffles of headwaters and creeks; also in sand-gravel runs and backwaters of small to large rivers (Ref. 5723).

Classification

Classified By

Girard, 1854

Class

Ray-finned fishes (Actinopterygii)

Order

Scorpionfishes and Flatheads (Scorpaeniformes)

Family

Sculpins (Cottidae)

Distribution

Region

North America

Distribution

North America: Pacific Slope drainages from lower Columbia River drainage in Washington to Morro Bay in California (including Sacramento-San Joaquin River drainage except upper Pit River), USA; absent in Rogue and Klamath River drainages in southern Oregon and northern California.

Range

46°N - 35°N

Environment

Climate

Temperate

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

demersal

Environment

Freshwater; demersal

Trophic Level

3.18 s.e. 0.45 Based on size and trophs of closest relatives

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

11.0 cm

Common Length

6.0 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

Unknown

Vulnerability

Low to moderate vulnerability (29 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