Male at Choy River
A male of Xiphophorus nigrensis at Taninul spring, Choy River, Pánuco drainage [San Luis Potosí]. Photo by Juan Miguel Artigas Azas. (01-May-2006). determiner Juan Miguel Artigas Azas




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Xiphophorus nigrensis (Rosen, 1960)

Espada pigmeo El Abra; Panuco swordtail.

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Original description as Xiphophorus pygmaeus nigrensis:

  • Rosen, Donn E. 1960. "Middle-American poeciliid fishes of the genus Xiphophorus". Bulletin of the Florida State Museum, Biological Sciences. v. 5(n. 4), pp. 57-242 (ffm00047)

Conservation: Xiphophorus nigrensis is not evaluated by the international union for the conservation of nature in the iucn red list of threatened species.