Sand roller (Percopsis transmontana)

General data
- Main name: Sand roller
- Climates: Temperate
- Habitat: Freshwater
- Native: North America
- Distribution: Columbia River
Classification
- Genus: Percopsis - Trout-perches
- Family: Percopsidae - Trout-perches
- Order: Percopsiformes - Trout-perches
- Class: Teleostei - Ray-finned fishes
- Superclass: Osteichthyes - Bony fishes
Description
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.