The upper rio Paraná basin drains the most developed and environmentally degraded
region in South America: the Brazilian southeast. While it is one of the most well-known …

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 …

A new species of Pseudopaludicola is described from the Cerrado of southeastern Brazil.
Pseudopaludicola facureae sp. nov. is diagnosed from the P. pusilla species group by the …

The genus Hisonotus was resurrected as a member of the tribe Otothyrini (actually subfamily
Otothyrinae). However, phylogenetic studies based on morphological and molecular data …

Abstract Pseudotothyris Britski & Garavello, 1984 is a genus of small catfishes distributed
only in coastal basins in southern and south-eastern Brazil, between Rio de Janeiro and …

Two new species of Hisonotus are described from the rio Paraná-Paraguay basin in Brazil.
The most remarkable features of the new species are the odontodes forming longitudinally …

A new species of Hisonotus is described from the headwaters of the rio Xingu. The new
species is distinguished from its congeners by having a functional V-shaped spinelet …

Abstract Microlepidogaster arachas Martins, Calegari & Langeani, sp. nov., a new
Hypoptopomatinae, is described from the upper rio Paraná basin. The new species is …

A new armored catfish species of the genus Pareiorhaphis is described from the middle and
upper portions of rio Paraguaçu basin, coastal drainage of Bahia State, northeastern Brazil …

A new species of Hisonotus is described from the upper rio Paraná and rio São Francisco
basins. The new species is distinguished from congeners by (1) completely exposed …