Vieja coatlicue sp. nov., una nueva especie de cíclido (Actinopterygii: Cichlidae) de la cuenca del Río Coatzacoalcos, México

" A new species of Central American cichlid is described, Vieja coatlicue sp. nov., from the Coatzacoalcos river basin (Oaxaca-Veracruz), Isthmus of Tehuantepec, Mexico. The species is easily distinguishable from its closest congener (V. zonata) with whom it was mistaken, for displaying the following characteristics: elongated body, posterior dorsal fin origin to the opercular rim, separation between the apex of the pelvic fins and the anus. A set characters that typify the species: spines and dorsal rays, generally XVII to XVIII, 10 to 12; anal fin VI, 7 to 9; pectoral fin, I,14 or 15; total gill rakers in the first branchial cleft 8-11; total vertebrae 30-31 "