Author: (Kner, 1863)
Remark: Reviewed by Bussing (1998: 310), with key, diagnosis, geographical distribution, and figures.
Comments: Inhabits stagnant waters as well as shallow waters of smaller rivers with organic material and low velocity.  Abundant in creeks with much organic matter but also resides in the shallow waters of rivers (Ref. 36880).  Feeds on aquatic insects.  Forms small groups on the river bottoms.