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Rio Grande cutthroat trout ( Oncorhynchus clarki virginalis), a member of the family Salmonidae, is found in northern New Mexico and southern Colorado in tributaries of the Rio Grande. [1 ]
It is one of 14
subspecies of cutthroat trout native to the western United States, and is the state fish of New Mexico.
Life history [ edit ]
Rio Grande cutthroat trout typically
spawn between mid-May and mid-June. Males are sexually mature at age two; females mature at age three. They live an average of five years, but in rare cases, may survive into their teens. Rio Grande cutthroat feed opportunistically on aquatic insects and terrestrial insects that fall into the water.
The Rio Grande cutthroat trout evolved in New Mexico as a member of a native fish assemblage that included the
longnose dace, the Rio Grande chub and the Rio Grande sucker.
Conservation [ edit ]
Rio Grande cutthroats currently live on 150 miles of
stream in the Santa Fe National Forest, which is only 15% of their historical range. According to U.S. Fish and Wildlife Service, 13 core populations remain in the wild. These are the key to the survival of the species. Four of the 13 core populations are located in the Santa Fe National Forest.
Further reading [ edit ]
Trotter, Patrick C. (2008). Cutthroat: Native Trout of the West (2nd ed.). Berkeley, CA: University of California Press. ISBN 978-0-520-25458-9.
External links [ edit ]
Froese, Rainer and Pauly, Daniel, eds. (2006).
" in Oncorhynchus clarki" FishBase. April 2006 version.