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The Nonindigenous Occurrences section of the NAS species profiles has a new structure. The section is now dynamically updated from the NAS database to ensure that it contains the most current and accurate information. Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. The table contains hyperlinks to collections tables of specimens based on the states, years, and drainages selected. References to specimens that were not obtained through sighting reports and personal communications are found through the hyperlink in the Table 1 caption or through the individual specimens linked in the collections tables.




Catostomus occidentalis
Catostomus occidentalis
(Sacramento Sucker)
Fishes
Native Transplant

Copyright Info
Catostomus occidentalis Ayres, 1854

Common name: Sacramento Sucker

Taxonomy: available through www.itis.govITIS logo

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).

Native range data for this species provided in part by NatureServe NS logo
Hydrologic Unit Codes (HUCs) Explained
Interactive maps: Point Distribution Maps

Nonindigenous Occurrences:

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.

StateFirst ObservedLast ObservedTotal HUCs with observations†HUCs with observations†
CA189820036Central Coastal; Lake Tahoe; Lower Klamath; Santa Maria; Smith; Upper Carson

Table last updated 12/6/2024

† 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).

Remarks: None.

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.

Other Resources:
FishBase Summary

Author: Fuller, P.

Revision Date: 11/13/2003

Peer Review Date: 11/13/2003

Citation Information:
Fuller, P., 2024, 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: 12/6/2024

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.

Disclaimer:

The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/6/2024].

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