Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Temperate; 43°N - 40°N
North America: Klamath River drainage in Oregon and California, USA; Pit River system from Fall River to Hat Creek in California.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 11.3 cm SL male/unsexed; (Ref. 137577); common length : 6.0 cm TL male/unsexed; (Ref. 12193); max. reported age: 5 years (Ref. 6083)
Inhabits soft-bottomed runs of clear, cold creeks and small to medium rivers.
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. 130435: Version 2025-2 (Global))
Threat to humans
Harmless
Human uses
Fisheries: of no interest
Tools
Special reports
Download XML
Internet sources
Estimates based on models
Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
|
Bayesian length-weight
|
a=0.00832 (0.00340 - 0.02033), b=3.16 (2.98 - 3.34), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Trophic level (Ref. 69278) |
3.3 ±0.5 se; based on size and trophs of closest relatives |
|
Generation time |
3.9 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies. |
Resilience (Ref. 120179) |
Medium, minimum population doubling time 1.4 - 4.4 years (tmax=5; k=0.28). |
Fishing Vulnerability (Ref. 59153) |
Low to moderate vulnerability (34 of 100). 🛈 |