Chondrichthyes

                     Elasmobranchii

                                          Euselachii

                                                                                    Rajiformes

                                                                                                     Potamotrygonidae

                                                                                                                 Potamotrygon sp.

Actinopterygii

                     Teleostei

                                          Ostariophysi

                                                               Otophysi

                                                                                    Characiformes

                                                                                                     Characidae

                                                                                                                 unidentified characins

                                          Acanthopterygii

                                                    Percomorpha

                                                                                    Perciformes

                                                                                             Labroidei

                                                                                                     Cichlidae

                                                                                                                 Crenicichla alta

                                                                                                                 Mesonauta festivus

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