Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Temperate; 44°N - 43°N
North America: Columbia River drainage in Idaho, Washington and Oregon, USA.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 9.6 cm TL male/unsexed; (Ref. 5723); common length : 7.0 cm TL male/unsexed; (Ref. 12193); max. reported age: 6 years (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: Version 2025-2)
Threat to humans
Harmless
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