(Trichomycterus diatropoporos)
Trichomycterus diatropoporos is a species of pencil catfish endemic to Brazil, where it occurs in the da Prata and Turvo river basins, tributaries of the das Antas river, in the Laguna dos Patos system in the state of Rio Grande do Sul. This species reaches a maximum length of 6.8 centimetres (2.7 in) SL.