| Cottus baileyi Robins, 1961 Black sculpin | 
|   | 
| photo by 
			N. Burkhead & R. Jenkins, courtesy of VDGIF | 
| Family: | Cottidae (Sculpins) | |||
| Max. size: | 8.4 cm TL (male/unsexed) | |||
| Environment: | demersal; freshwater | |||
| Distribution: | North America: occurs only in the extreme upper Clinch and Holston River systems (in Tennessee River drainage) in Virginia and Tennessee, USA. | |||
| Diagnosis: | ||||
| Biology: | Inhabits springs and rocky riffles of headwaters and creeks. | |||
| IUCN Red List Status: | Least Concern (LC); Date assessed: 08 November 2011 Ref. (130435) | |||
| Threat to humans: | harmless | |||