Rhinichthys osculus reliquus Hubbs & Miller, 1972

Grass Valley speckled dace




Taxonomy & Nomenclature



Conservation Status

Extinct (Burkhead, 2012)

Last record: 9 August 1938 (Miller et al. 1989:28)


Estimated date of extinction: 1950 (Burkhead, 2012)



Nevada, USA


Biology & Ecology










Original scientific description:

Hubbs, Clark L. and Miller, Robert Rush. (1972). Diagnoses of new cyprinid fishes of isolated waters in the Great Basin of western North America. Trans. San Diego Soc. Nat. Hist. 17: 101-106.


Other references:

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.

Deacon, J. E. and Williams, J. E. (1984). Annotated list of the fishes of Nevada. Proc Biol Soc Wash 97: 103-118.

Hubbs, Clark L. et al. (1974). Hydrographic history and relict fishes  of the north-central Great Basin. Mem. Calif. Acad. Sci. 7: 1-259.

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.

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.


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