A new species of catfish from the family Pseudopimelodidae has been discovered in a tributary of the Rio Uruguay in Brazil.
The new catfish, which has just been named Microglanis malabarbai in a paper by Vinicius Bertaco and Alexandre Cardoso in the journal Neotropical Ichthyology, was discovered in the Rio Ijui drainage, a tributary of the middle Rio Uruguay in Rio Grande do Sul, Brazil.
The fish is named after the ichthyologist Luis Malabarba, who has undertaken many studies on the catfishes of this region.
The Microglanis genus includes around a dozen species found across the continent, and on either side of the Andes, including: M. ater; M. cibelae; M. cottoides; M. eurystoma; M. iheringi; M. nigripinnis; M. parahybae; M. pellopterygius; M. poecilus; M. secundus; M. variegatus and Microglanis zonatus.
The new species is most similar to cottoides and eurystoma but has an almost completely black tail fin, which doesn\'t occur in these two relatives.
The paper also includes a dichotomous key to identify all of the currently known species in this genus.
For more details see the paper: Bertaco, VA and Cardoso, R. (2005) - A new species of Microglanis (Siluriformes: Pseudopimelodidae) from the Rio Uruguay drainage, Brazil. Neotropical Ichthyology, 3 (1): 61-67.