Abstract
The genus Pyrrhulina comprises 19 nominal species. The group, endemic of the Neotropical region, is assigned to the family Lebiasinidae, order Characiformes, and constitutes the sister group of the genus Copella. Recent studies based in the cladistic methodology, indicate that Pyrrhulina is a monophyliletic group, but the relationships among the species are still unclear, and the genus co…