Male at Huichihuayán
Male of Xiphophorus pygmaeus at Huichihuayán, Pánuco drainage [San Luis Potosi]. Photo by Juan Miguel Artigas Azas. (26-Nov-2017). determiner Juan Miguel Artigas Azas




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Xiphophorus pygmaeus Hubbs & Gordon, 1943

Espada pigmeo delgado; Pygmy platyfish; Pygmy swordtail.

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Original description as Xiphophorus pygmaeus:


  • Hubbs, Carl Leavitt & M. Gordon. 1943. "Studies of cyprinodont fishes. XIX. Xiphophorus pygmaeus, new species from Mexico". Copeia. 1943(1):31-33 (ffm00064)

Conservation: Xiphophorus pygmaeus is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (DD) data deficient (2018). Although the Huichihuayan and Axtla rivers carry enough flow and most areas remain in very good shape, with some remaining pristine areas, deforestation, pesticides, fertilizers and pollution (particularly around Huichihuayan) are common problems that affect them and have to be resolved, particularly in view of human population increase in the area.