Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Environment / Climate / Range
Freshwater; demersal. Subtropical; 49°N - 41°N
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 10.0 cm TL male/unsexed; (Ref. 5723); common length : 8.0 cm TL male/unsexed; (Ref. 12193)
North America: Pacific Slope drainages from Snohomish River and Puget Sound in Washington to Rogue River system in Oregon and California, USA.
Inhabits rubble and gravel-bottomed pools and riffles of headwaters, creeks and small rivers. Where the Cottus rhotheus and C. aleuticus do not occur, this species occupies riffles ; at localities where all occur together, it shifts to pools.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00617 (0.00246 - 0.01548), b=3.15 (2.93 - 3.37), based on LWR estimates for this (Sub)Family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Fec=432).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (28 of 100) .