Hyphessobrycon myrmex sp. nov., is described from the Rio Formiga, upper Rio Juruena,
upper Rio Tapajós basin, Mato Grosso, Brazil. The new species can be distinguished from …

A checklist of recent and fossil fishes of the Order Characiformes is presented herein and
believed to be complete through 2022. A total of 47 collaborators checked and provided …

A taxonomic review of the Hyphessobrycon panamensis species-group is presented, with
recognition of six valid species. In Central America, H. panamensis was restricted to the …

This study presents an extensive review of published and unpublished occurrence records
of fish species in the Rio Negro drainage system within the Brazilian territory. The data was …

A checklist of all freshwater fish species demonstrated to occur in Paraguay is presented
with the aim of providing an updated list of all known fishes from Paraguay and to establish a …

Among the order Characiformes, secondary sexual dimorphism is commonly associated to
the occurrence of bony hooks on fins, shape and length of the dorsal and anal fins, and …

A new Hemigrammus is described from the rio Paraguai and rio Madeira basins, Mato
Grosso and Rondônia States, Brazil. The new species is characterized by possessing a …

A new genus and species of characid fish is described from rio Braço Norte, a tributary of rio
Teles Pires, Tapajós basin, Mato Groso, Brazil. The new taxa can be diagnosed from the …

Hyphessobrycon montagi, new species, is described from tributaries of the Rio Arapiuns, a
left margin affluent of the lower Rio Tapajós, Amazon basin, Pará, Brazil. The new species …

The type-species of Hyphessobrycon is redescribed and its osteology provided.
Hyphessobrycon compressus is distinguished from its congeners by the 41-48 (mode 45) …