Author: Naseka, 2001
FBname: Don whitefin gudgeon
Comments: Inhabits bottom of moderately flowing lowland rivers, preferring sand bottom.  Nocturnal. Feeds on insect larvae and other large benthic invertebrates.  Locally threatened due to pollution and river engineering.  Populations most likely decline due to construction of large reservoirs in Don in 20th century (Ref. 59043).