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Salminus franciscanus, a new species from the rio São Francisco basin, Brazil (Ostariophysi: Characiformes: Characidae)
The large-sized dourado from the rio Sao Francisco basin, Brazil, is described and can be diagnosed from its congeners by the combination of the presence of an enlarged second tooth in the outer series of the dentary considerably larger than the remaining teeth.
Threatened fishes of the world: Brycon nattereri Günther, 1864 (Characidae)
Brycon nattereri (Ostariophysi: Characiformes: Characidae), a threatened South American freshwater fish, occurs in the Paraná, Tocantins and São Francisco river basins in central Brazil. It is a
Brycon gouldingi, a new species from the rio Tocantins drainage, Brazil (Ostariophysi: Characiformes: Characidae), with a key to the species in the basin
Brycon gouldingi, new species, is described from the rio Tocantins basin, Brazil, by the combination of a fifth infraorbital bone higher than wide and the presence of several narrow, wavy longitudinal stripes along the dorsolateral surfaces of the body.
Corydoras tukano, a new species of corydoradine catfish from the rio Tiquié, upper rio Negro basin, Brazil (Ostariophysi: Siluriformes: Callichthyidae)
O novo taxon pode ser distinguido de Corydoras reynoldsi principalmente pelo desenvolvimento das manchas do tronco, e de C. weitzmani pela presenca de uma mancha escura na porcao dorsal das placas dorsolaterais.
A phylogenetic analysis of Brycon and Henochilus (Characiformes, Characidae, Bryconinae) based on the mitochondrial gene 16S rRNA
The results showed that the genus Brycon is paraphyletic, since Henochilus is the sister-group of B. ferox and B. insignis, and the most basal species analyzed were the trans-Andean species B. henni, B. petrosus, andB.
A New Hyphessobrycon Durbin from the Rio Teles Pires, Rio Tapajós Basin, Mato Grosso State, Brazil (Characiformes: Characidae)
A new species of Hyphessobrycon Durbin is described from the Rio Teles Pires, Rio Tapajós basin, Mato Grosso State, Brazil and can be distinguished from all congeners by having the distal border of the anal fin slightly convex to straight in adult males.
A new species of Kolpotocheirodon (Teleostei: Characidae: Cheirodontinae: Compsurini) from Bahia, northeastern Brazil, with a new diagnosis of the genus
The basal relative position of Kolpotocheirodon within the Compsurini, in which all species are inseminating, is further supported by the presence of aquasperm in both species rather than the apomorphic elongate sperm nuclei present in the remaining members of the tribe.
A new species of Hyphessobrycon Durbin(Characiformes: Characidae) from the rio Juruena basin, Central Brazil, with notes on H. loweae Costa & Géry
A especie nova H. heliacus, descrita do trecho medio da drenagem do rio Juruena, bacia do alto rio Tapajos, estado de Mato Grosso, Brasil, difere de todas as congeneres, com excecao de H. loweae e H. peugeoti.
A new Moenkhausia ( Characiformes : Characidae ) from central Brazil , with comments on the area relationship between the upper rio Tapajós and upper rio Paraguai systems
A new species of Moenkhausia is described from the rio Juba, tributary of the rio Sepotuba (upper rio Paraguai basin), the rio Juruena and its tributary, the rio Papagaio (upper rio Tapajós basin),