First record of Goodea atripinnis (Cyprinodontiformes: Goodeidae) in the state of Hidalgo (Mexico) and some considerations about its taxonomic position

A population of blackfin goodea Goodea atripinnis was encountered in the Metztitlán Canyon Biosphere Reserve (Pánuco Basin, Hidalgo, Mexico). This species has a wide distribution across the Pacific Slope of Mexico, including the Lerma-Grande de Santiago basin, Ameca River, Magdalena Lake and the Balsas and Armería basins. Biometric data were used for identification and comparison to those of other putative members of the genus. The taxonomic identification and systematic position of this species are discussed. Goodea luitpoldii and G. gracilis are confirmed as synonyms with G. atripinnis. Comments on conservation implications of this species and their Pánuco Basin populations are given.