Mezquital pupfish
The Mezquital pupfish is a species of pupfish in the family Cyprinodontidae. It is endemic to Durango in Mexico. This species was described by Robert Rush Miller in 1976 from a pond which was fed by hot springs within the basin of the Río del Tunal, approximately east of Durango City at an altitude of about. The specific name honors the American ichthyologist Seth Eugene Meek, a pioneer of the study of the freshwater fish of Mexico.