Yet another new species is described in the rheophilic catfish genus Trichomycterus this week. T. argos is known from the Rio Doce watershed in the neotropical Atlantic rainforest of the Serra do Brigadeiro, Minas Gerais state, eastern Brazil.

The area is a national park and home to numerous endemic species although only around 5% of the original forest cover now remains. Continue reading »

A new species of the genus Trichomycterus is described from the rio Uruguai drainage, Rio Grande do Sol State, Brazil, with a single paratype from the rio Paranapanema basin, São Paulo State. Both rivers are tributaries within the rio Paraná watershed.

Trichomycterus perkos is named from the Greek ‘perkos’ (περκὸς), meaning ‘spotted or streaked with black marks’ in allusion to its colour pattern comprising dark stripes in smaller individuals and a combination of dark stripes and spots in larger specimens. Continue reading »