Author: (Valenciennes, 1846)
Comments: Rheophilous, inhabits rapids and riffles.  Found in small streams with large and deep pools covered by submerged plants, provided that small riffles are present between these pools. Occurs also in high gradient streams consisting almost exclusively  of waterfalls; in larger rivers, at the upper extremity of riffles where current velocity do not exceed 0.2 m/sec, as well as habitats with high water velocities exceeding 1 m/sec.  Often associated with <i>Annamia normani</i>, <i>Balitora</i> sp., <i>Schistura</i> spp., <i>Glyptothorax</i> spp., <i>Anguilla marmorata</i>, and <i>Rhinogobius</i> spp.  Stomach contents include benthic invertebrates and algae.  Observed to be active during daytime searching in the periphyton on both horizontal and vertical surfaces of stones probably searching for aquatic invertebrates (Ref. 40433).  Commonly found in aquarium trade in Finland (Länsman, pers. comm., 25/03/2010, Ref. to find).