Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Cypriniformes
- Family
- Catostomidae
- Genus
- Catostomus
- Species
- rimiculus
Habitat
This fish primarily inhabits clear, cold streams and rivers in the Klamath River basin of southern Oregon and northern California. It prefers gravel or rocky substrates with moderate currents, often found in pools, runs, and riffles. These areas provide cover and food sources in freshwater systems.
Diet
Klamath smallscale suckers mainly consume benthic invertebrates such as insect larvae, small crustaceans, and aquatic worms by foraging along the river bottom. They also eat algae and detritus, using their specialized mouth to suck up food particles. Feeding activity peaks during daylight hours in shallow waters.
Behavior
Klamath smallscale suckers are generally solitary or form loose schools, remaining active during the day and resting in deeper waters at night. They exhibit migratory behavior for spawning, moving upstream in spring, and can be territorial around spawning sites. These fish are adaptable but tend to avoid fast currents by staying in protected areas.
Conservation Status
Listed as Least Concern by IUCN.