During the last ten years I have been working on aspects of systematics of the Neotropical cichlid genus Gymnogeophagus , with my colleague Luiz Malabarba.
Present studies show that at least four more species are waiting to be described.
A phylogenetic re-assessment of the species of Gymnogeophagus and the description of the new species are under work at this moment by Luiz Malabarba and myself. Additionally, I and Malabarba have been cooperating with Peter Wimberger in his molecular studies of the evolution of parental care in this genus.