North America: Historically in much of Tennessee River drainage, from Virginia, North Carolina, Tennessee, Georgia to Alabama. Recently have been observed only in Little Tennessee River, North Carolina; Duck and Emory Rivers, Tennessee; and North Fork Holston River, Virginia and Tennessee, USA. Countries | FAO areas | Ecosystems | Occurrences | Introductions
Found in rocky riffles and runs of clean small to medium rivers (Ref. 5723, 10294). Juveniles are associated with small gravel substrates and moderate current, while adults are encountered in swift currents and boulder substrates. Feed on aquatic insects, predominated by midge, blackfly, and caddisfly larvae (Ref. 10294).
