Abstract
The Lebiasinidae family (Teleostei, Characiformes) has approximately 74 valid species of Neotropical freshwater fishes, that in general present a very small body size varying from 1.6 to a maximum of 20 cm length. However, this family still lacks studies in a cytogenetics point of view. In the genus Lebiasina, the diploid number are conserved in all the species analyzed till this moment, …