A Record of Invasive Black Catfish (Trachelyopterus lucenai) Predation by the Neotropical River Otter (Lontra longicaudis) in Restinga of Rio Grande, Southern Brazil

Trachelyopterus lucenai (Siluriformes: Auchenipteridae) is an invasive fish in restinga of Rio Grande, Rio Grande do Sul State, southern Brazil. In April 2007 remains of T. lucenai were found in the stomach of an individual of Lontra longicaudis which was run over near a pluvial channel in the restinga area. The present record contributes to the knowledge on otters predation on exotic/invasive species in aquatic environments.