We propose a practical concept that distinguishes the particular kind of weaponry that has
evolved to be used in combat between individuals of the same species and sex, which we …

A checklist of Recent and fossil catfishes (Order Siluriformes) is presented, summarizing
taxonomic literature published through 2005. From 4624 nominal species group names and …

The family Loricariidae, with about 683 species, is one the largest fish families in the world.
The subfamily Hypostominae was recently reviewed and is now divided in five tribes. With …

A phylogenetic study of the Loricariidae with emphasis on the Neoplecostominae is
presented based on a maximum parsimony analysis of 268 phenotypic characters …

The paper represents a comparative cytogenetic analysis of three populations of
Hypostomus regani in Brazil. Two populations belong to the Upper Paraná River Basin and …

Isbrueckerichthys is a genus of armored catfish (Siluriformes: Loricariidae) with five species
in the lowlands from the Ribeira de Iguape basin and in the uplands of the Tibagi River …

A new species of Hypostomus with large and spaced light roundish spots is described from
the upper rio Paraná basin. Hypostomus multidens new species is distinguished from all …

Understanding spatial patterns of species diversity and the variables that structure biological
communities is critical to successful ecosystem management. Regional diversity (γ) can be …

Previous cytogenetic analyses in Trypoxylon Latreille, 1796 have been basically restricted to
C-banding. In the present study, base-specific CMA3 and DAPI fluorochrome staining were …

Two new Isbrueckerichthys species from Paranapanema river basin are described, I.
saxicola and I. calvus, respectively from ribeirão Jacutinga and rio Taquara affluents. Both …