Open AccessRevision of the neotropical cichlid genus Gymnogeophagus Ribeiro, 1918, with descriptions of two new species (Pisces, Perciformes)
Author(s) -
Roberto Esser dos Reis,
Luiz Roberto Malabarba
Publication year - 1987
Publication title -
revista brasileira de zoologia
Language(s) - English
Resource type - Journals
eISSN - 1806-969X
pISSN - 0101-8175
DOI - 10.1590/s0101-81751987000400002
Subject(s) - biology , perciformes , cichlid , zoology , genus , key (lock) , ecology , fishery , fish <actinopterygii>
The Neotropical cichlid genus Gymnogeophagus Ribeiro, 1918 is revised. The following species are considered valid and are redescribed: G. rhabdotus (Hensel, 1870), G. gymnogenys (Hensel, 1870), G. labiatus (Hensel, 1870), G. balzanii (Perugia, 1891) and G. australis (Eigenmann, 1907). In addition, two new species are described: G. lacustris, sp. n., from the coastal region of southern Brazil and G. meridionalis, sp. n., from the lower Rio Paraná and Rio Uruguay systems. Lectotypes are designated for Geophagus bucephalus Hensel, 1870 (= G. labiatus) and Geophagus scymnophilus Hensel, 1870 (= G. labiatus) and the phylogenetic relationships among the species are analyzed. An osteological description based mainly on G. meridionalis is presented. A map of species distribution and a key to the species are provided