The longfin dace (''Agosia chrysogaster'') is a leuciscid fish that is found in western North America in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...

and

Mexico Mexico ( Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guate ...

. It is the only member of its genus. The Gila longfin dace is considered the nominate subspecies. The Yaqui longfin dace is considered a form.

References

* Leuciscinae Fish of North America Fish described in 1856 Taxa named by Charles Frédéric Girard {{Leuciscinae-stub