The stumptooth minnow (''Stypodon signifer'') is an extinct species of

cyprinid Cyprinidae is a family of freshwater fish commonly called the carp or minnow family. It includes the carps, the true minnows, and relatives like the barbs and barbels. Cyprinidae is the largest and most diverse fish family and the largest ver ...

fish. It was found only in

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 Guatema ...

Sources

Cyprinid fish of North America Fish of Mexico Fish described in 1881 Leuciscinae Taxonomy articles created by Polbot {{Leuciscinae-stub