Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten bottenlevande. Temperate; 38°N - 32°N
North America: Colorado River drainage from southwestern Wyoming to southern Arizona in the USA.
Size / Vikt / Age
Maturity: Lm ?  range ? - ? cm
Max length : 56.0 cm TL hane/ej könsbestämd; (Ref. 5723); common length : 35.0 cm TL hane/ej könsbestämd; (Ref. 12193); publicerad maxvikt: 920.00 g (Ref. 4699)
Adults inhabit rocky pools, runs and riffles of medium to large rivers. Less often found in creeks and small rivers.
Life cycle and mating behavior
Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver
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)
Threat to humans
Harmless
Human uses
Sportfisk: ja
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00560 - 0.02463), b=2.99 (2.81 - 3.17), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 2.8 ±0.2 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (K=0.38-0.46).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (33 of 100).