Resolving patterns of ancient and rapid diversifications is one of the most challenging tasks
in evolutionary biology. These difficulties arise from confusing phylogenetic signals that are …

This study provides the most comprehensive Model-Based Total Evidence (MBTE)
phylogenetic analyses of the clade Gymnotiformes to date, reappraising relationships using …

ABSTRACT A morphological revision is presented here on the cohort Otomorpha, a clade
currently interpreted as the most primitive among the large supercohort Clupeocephala …

The bluntnose knifefish genus BrachyhypopomusMago-Leccia, 1994, is diagnosed from
other Rhamphichthyoidea (Rhamphichthyidae+ Hypopomidae) by the presence of a disk …

We advance on the knowledge of Eigenmanniinae by proposing a hypothesis of
phylogenetic relationships based on the parsimony analysis of a diverse set of 144 …

The present study offers a broad comparative analysis of the dorsolateral head musculature
in the Gymnotiformes, with detailed descriptions and illustrations of the dorsolateral head …

A new species of Eigenmannia is described from the rio Mutum, tributary of upper rio
Juruena, rio Tapajós basin, Comodoro, Mato Grosso, Brazil. The new species is …

Fishes are both extremely diverse and morphologically disparate. Part of this disparity can
be observed in the numerous possible fin configurations that may differ in terms of the …

The evaluation of the growth patterns and reproductive strategies of fish species are vitally
important for the understanding of their biology and the management of stocks. The present …

A detailed osteological study of the poorly known and critical endangered ghost knifefish,
Tembeassu marauna, from the rio Paraná, Brazil, was conducted using X-ray …