Adult in Rio Terrero
An adult of Algansea aphanea in Rio Terrero, Coahuayana drainage [Jalisco]. Photo by Juan Miguel Artigas Azas. (20-May-2022). determiner Juan Miguel Artigas Azas




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Algansea aphanea Barbour & Miller, 1978

Pupo del Ayutla; Riffle chub.

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Original description as Algansea aphanea:


  • Barbour, Clyde D. & R.R. Miller. 1978. "A revision of the Mexican cyprinid fish genus Algansea". Miscellaneous Publications, Museum of Zoology, University of Michigan. (155):1-72 (ffm00085)

Conservation: Algansea aphanea is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (EN) endangered (2018). Algansea aphanea currently occupies the San Jeronimo River and the San Pedro Bridge stream, two small tributaries in the upper Coahuayana River drainage. Historical reports suggest that it has been extirpated from the Armeria River drainage, as well as multiple locations in the Coahuayana River drainage. Primary threats include severe flow-modification and surface water diversion for agricultural use, municipal and industrial wastewater discharge, and potential interspecific competition with introduced species (Domínguez Domínguez, 2019).