USGS researchers at the Tennessee Fishery Research Unit are using eDNA sampling to determine if slender chub exists or could be restored. The slender chub (Erimystax cahni) is a federally threatened fish native to and geographically restricted to eastern North America. More specifically, the Powell, Clinch, and lower Holston Rivers in Tennessee were historical collection areas. Habitat degradation from multiple sources, including surface mining, agriculture, dams, and urbanization, is associated with the decline of this species - an obligate inhabitant of gravel shoals in large rivers. Abstract narrative source: USFWS Cooperator Science Series.
