Author: (Camelier & Zanata, 2014)
Comments: Inhabits clear and dark water streams with rock, pebbles and sand bottoms and moderate to rapid water current . These streams have riparian vegetation mainly composed of grass, herbs, shrubs and trees. Syntopic with several fishes.  Feeds on allochthonous and autochthonous items, consisting of filamentous algae, fragments of vascular plants and seeds, organic debris, insect aquatic larvae (Trichoptera and other unidentified orders) and  adults terrestrial insects (Hymenoptera: Formicidae and other unidentified orders) and of other unidentified arthropods.  Mature males and females are present in different seasons (austral autumn and winter in April, June and July; spring and summer in December) which might suggest that this species reproduces throughout the year (Ref. 95041).