Author: (Fang, 1943)
Comments: Inhabits bottom of moderately flowing large and medium size lowland rivers, preferring sand bottom.  Also found in lake. Juvenile may occur in backwaters.  Active at night, feeding on insect larvae and other large benthic invertebrates. Populations most likely have declined due to construction of large reservoirs on Danube in 20th century and have stabilized at a moderate level since (Ref. 59043).