Male defending territory
A male of Cyprinodon bifasciatus defending his territory in La Becerra spring, Cuatro CiƩnegas valley [Coahuila]. Photo by Juan Miguel Artigas Azas. (19-Nov-2005). determiner Juan Miguel Artigas Azas

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Cyprinodon bifasciatus Miller, 1968

Twoline pupfish.

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Original description as Cyprinodon bifasciatus:


  • Miller, Robert Rush. 1968. "Two new fishes of the genus Cyprinodon, from the Cuatro Cienegas basin, Coahuila, Mexico". Occasional Papers of the Museum of Zoology, University of Michigan. (659):1-15 (ffm00173)

Conservation: Cyprinodon bifasciatus is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (1996).