Gila crassicauda (Baird & Girard in Girard, 1854:137)

Thicktail chub, Sacramento chub, mee-coosh (Amerindian)



Taxonomy & Nomenclature

Synonym/s: Lavinia crassicauda Baird & Girard in Girard, 1854:137 (original combination); Siboma crassicauda (Baird & Girard in Girard, 1854:137)


Conservation Status

Extinct (Burkhead, 2012)

Last record: 1950 (McGinnis, 2006:216); 7 August 1950 (Miller, 1961); 16 April 1957 (Miller et al. 1989:26)

IUCN RedList status: Extinct


Estimated date of extinction: 1957 (Burkhead, 2012)



California, USA


Biology & Ecology




USNM 6729.5001127 (1 fish)

USNM 20905.5002759 (1 fish)

USNM 15407.5001937 (1 fish)

CAS 83065 (1 fish)

CAS 11060 (1 fish)

CAS 64429 (3 fish)


See here:


Archaeological remains:

Bones have been found at Tsaki, a Patwin native American village (McGinnis, 2006:216).



Source: Wikimedia Commons.



Original scientific description:

Baird & Girard in: Girdard, Charles. (1854). Descriptions of new fishes, collected by Dr. A. L. Meermann, naturalist attached to the survey of the Pacific railroad route, under Lieut. R. S. Williamson, USA. Proc. Acad. Nat. Sci. Phila. 7: 129-140.

Other references:

Ayres, W. O. (1862). Occurence of freshwater fishes in San Francisco Bay. Proc. Calif. Acad. Nat. Sci. 2: 163.

Burkhead, Noel M. (2012). Extinction Rates in North American Freshwater Fishes, 1900–2010. BioScience 62(9): 798-808.

Day, David. (1981). The Doomsday Book of Animals: A Natural History of Vanished Species. New York, N.Y.: The Viking Press.

Jelks, Howard L., Walsh, Stephen J., Burkhead, Noel M., Contreras-Balderas, Salvador, Díaz-Pardo, Edmundo, Hendrickson, Dean A., Lyons, J., Mandrak, Nicholas E., McCormick, Frank, Nelson, Joseph F., Platania, Steven P., Porter, Brady A., Renaud, Claude B., Schmitter-Soto, Juan Jacabo, Taylor, Eric B. and Warren, Melvin L. Jr. (2008). Conservation status of imperiled North American freshwater and diadromous fishes. Fisheries 33(8): 372-407.

Lee, D.S., Gilbert, C.R., Hocutt, C.H., Jenkins, R.E., McAllister, D.E. and Stauffer, J.R., Jr. 1980. Atlas of North American freshwater fishes. North Carolina State Museum of Natural History, Raleigh, North Carolina.

McGinnis, Samuel M. (2006). Field Guide to Freshwater Fishes of California, revised edition. California Natural History Guide Series No. 77. Berkeley and Los Angeles, California: University of California Press.

Miller, Robert Rush. (1961). Man and the changing fish fauna of the American southwest. Papers of the Michigan Academy of Science, Arts, and Letters 46: 365-404.

Miller, Robert Rush. (1963). Synonymy, characters, and variation of Gila crassicauda, a rare Californian minnow, with an account of its hybridisation with Lavinia exilicauda. Calif. Fish Game 49: 20-29.

Miller, R. R., Williams, J. D. and Williams, J. E. (1989). Extinctions of North American fishes during the past century. Fisheries 14(6): 22-38.

Mills, T. J. and Mamika, K. A. (1980). The thicktail chub, Gila crassicauda, an extinct Californian fish. Calif. Dep. Fish Game, Inland Fish. End. Sp. Prog. Spec. Publ. 80-2. 21 pp.

Moyle, P.B. 1976. Inland fishes of California. University of California Press, Berkeley, California.

Moyle, P.B. 2002. Inland fishes of California. Revised and expanded. University of California Press, Berkeley, California.

NatureServe. 2021. Gila crassicauda (amended version of 2013 assessment). The IUCN Red List of Threatened Species 2021: e.T9183A207441342. Accessed on 01 July 2022.

Nelson, J.S., Crossman, E.J., Espinosa-Perez, H., Findley, L.T., Gilbert, C.R., Lea, R.N. and Williams, J.D. 2004. Common and scientific names of fishes from the United States, Canada, and Mexico. American Fisheries Society, Bethesda, Maryland.

Page, L.M. and Burr, B.M. 2011. Peterson field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Harcourt, Boston, Massachusetts.

Robins, C.R., Bailey, R.M., Bond, C.E., Brooker, J.R., Lachner, E.A., Lea, R.N. and Scott, W.B. 1991. Common and scientific names of fishes from the United States and Canada. American Fisheries Society.

Rutter, C. (1908). The fishes of the Sacramento-San Joquain basin, with a study of their distribution and variation. Bull. U. S. Bur. Fish 27: 103-152.

Schulz, P. D. (1979). Fish remains from a historic central California Indian village. Calif. Fish Game 65: 273-276.

World Conservation Monitoring Centre. (1996). Gila crassicauda. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.1. ( Downloaded on 09 July 2011.


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