Inhabits vegetated and brushy stream margins and pools of creeks and small to medium rivers, and rocky and vegetated margins of lakes (Ref. 5723). Most commonly found in clear, silt-free rocky streams (Ref. 5723). An introduced species in Europe which avoids swift waters and occurs in a wide variety of slow-flowing to stagnant waters such as large rivers, lakes, ponds, canals and backwaters (Ref. 59043). Feeds on small crustaceans, insects and fish (Ref. 30578).
- 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) http://www.fishbase.org/references/FBRefSummary.php?id=5723&speccode=2590