Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Cypriniformes
- Family
- Catostomidae
- Genus
- Catostomus
- Species
- occidentalis
Habitat
This fish primarily inhabits clear, cool freshwater rivers, streams, and lakes in the Pacific coastal drainages of California and Oregon. It prefers areas with gravel or sandy bottoms and moderate currents, such as the Sacramento-San Joaquin River system and tributaries. They are less common in stagnant or polluted waters.
Diet
Sacramento suckers are omnivorous, feeding mainly on algae, detritus, aquatic insects, and small crustaceans scraped from the river bottom. They use their specialized mouth to forage during the day, often in shallow waters. Feeding activity peaks in warmer months when food sources are abundant.
Behavior
These fish are generally solitary or form loose schools, spending most of their time near the river bottom and being most active during the day. They exhibit seasonal migrations for spawning and are not highly territorial except during breeding. In response to threats, they often hide in crevices or bury themselves in substrate.
Conservation Status
Listed as Least Concern by IUCN.