Common name: Sacramento Sucker
available through www.itis.gov
Identification: Moyle (1976); Page and Burr (1991).
Size: 60 cm.
Native Range: Pacific Slope from Mad River, northern California, to Salinas River, central California; throughout the Sacramento--San Joaquin drainage, southern Oregon and California; south in endorheic basins of central California to Kern River (Page and Burr 1991).
Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Catostomus occidentalis are found here.
Table last updated 2/27/2023
† Populations may not be currently present.
Means of Introduction: Unknown.
Status: Reported from California.
Impact of Introduction: These suckers may compete with trout for food and space, and their feeding activities may disturb trout nests (Burns 1966).
References: (click for full references)
Burns, J. W. 1966. Western sucker. Pages 516--517 in
A. Calhoun, editor. Inland Fisheries Management. California Department of Fish and Game.
Moyle, P. B. 1976. Inland fishes of California. University of California Press, Berkeley, CA.
Page, L. M., and B. M. Burr. 1991. A field guide to freshwater fishes of North America north of Mexico. The Peterson Field Guide Series, volume 42. Houghton Mifflin Company, Boston, MA.
Revision Date: 11/13/2003
Peer Review Date: 11/13/2003
Fuller, P., 2023, Catostomus occidentalis Ayres, 1854: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=349, Revision Date: 11/13/2003, Peer Review Date: 11/13/2003, Access Date: 3/29/2023
This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.