Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten bottenlevande. Temperate; 44°N - 43°N
North America: Columbia River drainage in Idaho, Washington and Oregon, USA.
Size / Vikt / Age
Maturity: 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)
Occurs in quiet backwaters and pool margins of small to large rivers. Usually found near vegetation over sand.
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
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00575 (0.00275 - 0.01206), b=3.08 (2.88 - 3.28), 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).
Fishing Vulnerability (Ref.
59153): Low vulnerability (24 of 100).