1 literature reference for Gymnogeophagus tiraparae González-Bergonzoni, Loureiro & Oviedo, 2009:

Author: González-Bergonzoni, I., M. Loureiro and S. Oviedo
Year: 2009
Title: A new species of Gymnogeophagus from the río Negro and río Tacuarí basins, Uruguay (Teleostei: Perciformes).
Source: Neotrop. Ichthyol. 7(1):19-24.