Percopsis transmontana, the Sand roller, is a species of percopsiform fish endemic to the Columbia River drainage in the northwestern United States. This species grows to a length of 9.6 centimetres (3.8 in) TL. Sand rollers can live up to 6 years in slow-moving, sandy-bottomed streams and rivers among vegetation. Their diet includes flies and Trichoptera, although juveniles also have been known to eat crustacean zooplankton.
- Froese, Rainer, and Daniel Pauly, eds. (2012). "Percopsis transmontana" in FishBase. April 2012 version.
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