Anisotremus davidsonii
Anisotremus davidsonii
Native Transplant
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Anisotremus davidsonii (Steindachner, 1876)

Common name: Sargo

Taxonomy: available through www.itis.govITIS logo

Identification: Miller and Lea (1972); Thomson et al. (1979); Eschmeyer et al. (1983). Also appears as A. davidsoni.

Size: 58 cm.

Native Range: Tropical, marine. The sargo is native to the Pacific Ocean from Santa Cruz, California, to southern Baja California (Eschmeyer et al. 1983).
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Interactive maps: Point Distribution Maps

Nonindigenous Occurrences: This species is now established in the Salton Sea in California (Walker et al. 1961; Shapovalov et al. 1981). It was introduced into and later extirpated at an unspecified location in New Mexico (Sublette et al. 1990).

Means of Introduction: A total of 65 fish were stocked in the Salton Sea in 1951 by the California Department of Fish and Game (Walker et al. 1961). The means and reason for introduction to New Mexico are unknown.

Status: Established in California; extirpated in New Mexico.

Impact of Introduction: Unknown.

Remarks: This species feeds on crustaceans, mollusks, and bryozoans (Eschmeyer et al. 1983). Its population in the Salton Sea is very large (Walker et al. 1961; Shapovalov et al. 1981).

References: (click for full references)

Cordone, A.J. - Department of Fish and Game, Sacramento, CA. Response to NBS-G non-indigenous questionaire. 1992.

Eschmeyer, W. N., E. S. Herald, and H. Hamann. 1983. A field guide to Pacific Coast fishes of North America. Peterson Field Guide Series. Houghton Mifflin Co., Boston, MA.

Shapovalov, L., A. J. Cordone, and W. A. Dill. 1981. A list of freshwater and anadromous fishes of California. California Fish and Game 67(1):4-38.

Sublette, J. E., M. D. Hatch, and M. Sublette. 1990. The fishes of New Mexico. New Mexico Department of Game and Fish, University of New Mexico Press, Albuquerque, NM. 393 pp.

Walker, B. W., R. R. Whitney, and G. W. Barlow. 1961. Fishes of the Salton Sea. Pages 77-92 in B. W. Walker, editor. The ecology of the Salton Sea, California, in relation to the sport fishery of California. Department of Fish and Game Fish Bulletin 113.

Other Resources:
FishBase Summary

Author: Fuller, P.

Revision Date: 5/17/2000

Peer Review Date: 4/1/2016

Citation Information:
Fuller, P., 2018, Anisotremus davidsonii (Steindachner, 1876): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL,, Revision Date: 5/17/2000, Peer Review Date: 4/1/2016, Access Date: 3/22/2018

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.

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Page Last Modified: Wednesday, March 14, 2018


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Citation information: U.S. Geological Survey. [2018]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [3/22/2018].

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