Occurrence of the alien invasive loach Misgurnus anguillicaudatus in the Iguaçu River basin in southern Brazil: a note of concern

The pond loach or oriental weatherfish Misgurnus anguillicaudatus is a small freshwater fish native to eastern Asia inhabiting the shallows of streams, lakes, swamps, and rice fields. The loach was introduced and, in some places, became established in various drainages throught the world. In this paper M. anguillicaudatus individuals are reported from several widely-separated sites in the Iguac River basin.