Gymnogeophagus che, una nueva especie de la familia Cichlidae de la cuenca del río Paraná (Perciformes, Labroidei)

Resumen

Gymnogeophagus che, a new species of the family Cichlidae from the Paraná river basin (Perciformes, Labroidei). Gymnogeophagus che, new species, is described from the Paraná river basin in northeastern Argentina. This species can be distinguished from its congeners by the following combination of characters: Absence of small rounded spots on dorsal, anal, and caudal fins, few hyaline stripes on caudal fin, low body depth and head profile, and ascending arm of the premaxilla bearing a wide symphyseal articular facet.