Percopsis transmontana
| Percopsis transmontana | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Percopsiformes |
| Family: | Percopsidae |
| Genus: | Percopsis |
| Species: | P. transmontana |
| Binomial name | |
| Percopsis transmontana (C. H. Eigenmann & R. S. Eigenmann, 1892) | |
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.