Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bottenlevande. Temperate; 44°N - 43°N
North America: Columbia River drainage in Idaho, Washington and Oregon, USA.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 9.6 cm TL hane/ej könsbestämd; (Ref. 5723); common length : 7.0 cm TL hane/ej könsbestämd; (Ref. 12193); rapporterad maxålder: 6 år (Ref. 12193)
Adults occur in quiet backwaters and pool margins of small to large rivers. Usually found near vegetation over sand (Ref. 5723). Migratory behaviour is undetermined (Ref. 126106).
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)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 1.0002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00575 (0.00273 - 0.01212), b=3.08 (2.89 - 3.27), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Generation time: 2.0 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Resiliens (Ref.
120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (tmax = 6; Fec = 5,370).
Sårbarhet i fisket (Ref.
59153): Low vulnerability (24 of 100).
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