Environment: milieu / climate zone / distribuzione batimetrica / distribution range					
						Ecologia					
				
				
				
					; acqua dolce demersale. Temperate; 37°N -   36°N				
				
			
			
			
				
				
				
					North America:  occurs only in the extreme upper Clinch and Holston River systems (in Tennessee River drainage) in Virginia and Tennessee, USA.
				
				
			
			
				
					Size / Peso / Age
				
				
				
					Maturità: Lm ?  range ? - ? cm
 Max length : 8.4 cm TL maschio/sesso non determinato; (Ref. 5723); common length : 6.0 cm TL maschio/sesso non determinato; (Ref. 12193)				
				 
			
			
			
			
			
			
			
			
				Inhabits springs and rocky riffles of headwaters and creeks.			
			
			
			
			
				
					Life cycle and mating behavior					
					Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve				
				
				
				
								
				
			
			 
				
				
				
					Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)
				
				 
			
			
			
							
					
						IUCN Red List Status   (Ref. 130435: Version 2025-1)
					
					
				 
					
			
			
			
			
			
			
			
				
					Threat to humans  
				
				
				
					  Harmless				
				
			 
			
			
			
			
				
					Human uses  				
				
				
					Pesca: di nessun interesse				
				
				
			
			
						
			
			
			
				
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					Estimates based on models				
				
				
				
				
				
					
					Phylogenetic diversity index  (Fonte Biblio. 
82804):  PD
50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].					
													Bayesian length-weight: a=0.00589 (0.00281 - 0.01234), b=3.15 (2.97 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 
93245).
					
					Trophic level  (Fonte Biblio. 
69278):  3.2   ±0.4 se; based on size and trophs of closest relatives					
											
				
				
										
						Resilienza  (Fonte Biblio. 
120179):  Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).					
											
				
									
					Fishing Vulnerability  (Ref. 
59153):  Low vulnerability (10 of 100). 
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