Neotropical tetras of the family Characidae form the largest and most taxonomically complex
clade within the order Characiformes. Previous phylogenetic relationships concur on the …

Cyphocharax magdalenae, a Colombian freshwater fish species, plays a vital role in
nutrients distribution and serves as a significant food source for other fish species and local …

A new species of Characidium is described from the headwaters of the Rio Itararé, upper
Rio Paraná basin, at the boundaries of the Ponta Grossa Arch and the Devonian …

A new species of Characidium shared by adjacent tributaries of the upper portions of the
Tapajós and Xingu river basins is described. Characidium varii, new species, can be …

Wallacean shortfalls in knowledge about biodiversity, especially in the Amazon biome, can
only be addressed by increasing sampling efforts in focal areas. The objective of this study …

A taxonomic review of Triportheus from the Paraná-Paraguai basin was conducted, with four
valid species recognized: two natives, one introduced in the upper rio Paraná basin, and …

This study describes Chrysobrycon calamar, a new stevardiine fish from the upper Río
Vaupés basin in Colombia. The new species differs from its congeners by the following …

Moenkhausia lepidura ocoae is herein considered a valid species in Hyphessobrycon and a
senior synonym of Hyphessobrycon otrynus. Hyphessobrycon ocoae was also misidentified …

Leporinus tigrinus was described based on specimens collected in the rio Tocantins basin,
and was only recently recorded at the rio Xingu, rio Tapajós and upper rio Paraná basins …

The type series of Leporinus paranensis includes two distinct species, one of which is herein
described as new. Leporinus paranensis is redescribed based on its holotype, two …