Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Temperate; 42°N - 37°N
North America: Lahontan and other interior basins in northern Nevada and northern California, USA including Humboldt, Walker, Carson, Truckee, Susan, Quinn and Reese River systems; Walker, Tahoe and Pyramid Lakes. Introduced elsewhere, including upper Sacramento River systems in California.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 17.0 cm TL male/unsexed; (Ref. 5723); common length : 7.2 cm TL male/unsexed; (Ref. 12193); max. reported age: 5 years (Ref. 12193)
Distinguished from a similar species Richardsonius balteatus by having less anal rays (8-9, rarely 10), longer snout, more slender body and less slender caudal peduncle (Ref. 86798).
Occurs in margin of lakes and all types of stream habitats but usually in pools and slow runs (Ref. 86798).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae
Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00376 - 0.01926), b=3.06 (2.86 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 2.9 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (tmax=5).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
