The largescale pupfish (''Cyprinodon macrolepis'') is a species of

fish Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% ...

in the family Cyprinodontidae. This

pupfish Pupfish are a group of small killifish belonging to ten genera of the family Cyprinodontidae of ray-finned fish. Pupfish are especially noted for being found in extreme and isolated situations. They are primarily found in North America, South ...

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...

to Chihuahua 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 Guate ...

, where it is found only in a small spring known as El Ojo de Hacienda Delores and its outlet canal. This spring is located southwest of Jimenez, Chihuahua, and lies in the drainage basin of the

Rio Florida Rio or Río is the Portuguese, Spanish, Italian, and Maltese word for "river". When spoken on its own, the word often means Rio de Janeiro, a major city in Brazil. Rio or Río may also refer to: Geography Brazil * Rio de Janeiro * Rio do Sul, a ...

References

Cyprinodon Endemic fish of Mexico Pupfish, Largescale Endangered fish Endangered biota of Mexico Taxa named by Robert Rush Miller Fish described in 1976 Taxonomy articles created by Polbot {{Cyprinodontiformes-stub