Author: (Agassiz, 1828)
FBname: Danubian longbarbel gudgeon
Comments: Adults inhabit riffles of small, fast-flowing rivers and bottom of large rivers with water velocities of 0.7 m/s and more, stone bottom, in submontane zone.  Young individuals prefer areas with slow current and shallow shoreline on sand bottom.  Adults are nocturnal and solitary while juveniles are diurnal.  Spawning occurs in shallow areas with very high current of about 1 m/s (Ref. 59043).  Adults feed on insects and benthic invertebrates (Ref. 556). Are sensitive to pollution and damming; locally threatened, especially in western and southern Danube drainage; extirpated in the upper Danube (Ref. 59043).