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 …

Aim: Heterogenous environments can contribute to maintain biodiversity. Traditionally beta
diversity studies have focused on determining the effect of environmental variables on the …

A new species of Parotocinclus is described from the Rio Tocantins basin, Tocantins State,
Brazil. The new species is distinguished from congeners by a combination of characters …

A new species of Hisonotus from rio Juma, located at the right margin of the lower rio
Aripuanã, rio Madeira basin is described. The new species is distinguished from its …

Otothyropsis dialeukos is described from Itá creek, tributary to the upper Río Paraná basin,
Paraguay. The new species is distinguished from its congeners by having a unique caudal …

This study aims to provide an annotated list of the type-material housed in the fish collection
of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade …

The ribeirão Sucuri, a tributary of the rio Tietê, and part of the upper rio Paraná basin, is
located in the municipality of Pongaí, São Paulo state. The ichthyofauna of ribeirão Sucuri …

A recent expedition to headwaters of the Rio Pandeiros, a left‐bank tributary of the Rio São
Francisco revealed the presence of a fourth species of Hisonotus from that basin. Hisonotus …

A new species of Hisonotus is described from headwaters of rio Araguaia basin, municipality
of Barra do Garças, Mato Grosso state, Brazil. The new species is distinguished from its …

The number of species of Microlepidogaster recently increased considerably, the genus
presently comprises six species distributed in the Paraná, São Francisco, and Jequitinhonha …