Staeck, W.
Gymnogeophagus caaguazuensis sp. n. - a new species of cichlid fish (Teleostei: Perciformes: Cichlidae) from the drainage of the lower Río Paraguay in Paraguay.Abstract:
Gymnogeophagus caaguazuensis sp. n. is described from the drainage of the upper Río Tebicuary-mi in the province of Caaguazú in Paraguay. It can be distinguished from all other described Geophagus species by the following combination of characters: body deep, caudal peduncle short, caudal fin of males lyreate, 26-28 scales in a lateral line and small size.
Staeck, W. Zoologische Abhandlungen, 56: 99-105, 2006