A new species of Hisonotus (Siluriformes: Otothyrinae) from the upper rio Paraná and rio São Francisco basins, Brazil.

@article{Roxo2016ANS,
  title={A new species of Hisonotus (Siluriformes: Otothyrinae) from the upper rio Paran{\'a} and rio S{\~a}o Francisco basins, Brazil.},
  author={F{\'a}bio Fernandes Roxo and Gabriel de Souza da Costa e Silva and Brandon T. Waltz and Jorge E G Melo},
  journal={Zootaxa},
  year={2016},
  volume={4109 2},
  pages={227-38}
}
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 abdomen with no development of dermal plates (with the exception of extremely small platelets present near the urogenital pore in some specimens) and the combination of the following… CONTINUE READING