An annotated checklist for the freshwater fishes from Paraná State, Brazil is provided. A total
of 440 freshwater fish species are recorded for the state, distributed across five ecoregions …

Cytogenetic studies demonstrated that unstable chromosomal sites in armored catfishes
(Loricariidae) triggered intense karyotypic diversification, mainly derived from Robertsonian …

Fish belonging to the genus Hypostomus are known for exhibiting a striking diversity in its
karyotype structure, however the knowledge concerning the distribution patterns of …

Hypostomus is a diverse group with unclear aspects regarding its biology, including the
mechanisms that led to chromosome diversification within the group. Fluorescence in situ …

A redescription of Hypostomus hermanni is presented herein along with the description of a
new species of Hypostomus, which is apparently endemic to the Ivaí River basin, a tributary …

Psalidodon fasciatus is a complex of several fish species widely distributed in Brazilian
hydrographic systems that share morphological characteristics and show a high taxonomic …

Hypostominae is the largest subfamily of Loricariidae, and is widely distributed throughout
the Neotropic. In the present article, we analyze three Loricariidae species that were …

Hypostomus is the most specious genus of Hypostominae, composed of several species
with high intraspecific morphological and color pattern variation, making their identification a …

Hypostomus velhochico sp. n., is described from the rio São Francisco basin, in the states of
Minas Gerais and Bahia, Brazil. The new species is mainly distinguished from its congeners …

In fish species, heterochromatinization is one process that could trigger sex chromosome
differentiation. The present article describes a nascent XX/XY sex chromosome system …