Crystallaria cincotta Welsh & Wood, 2008 Diamond darter |
photo by
Thorne, D.W. |
Family: | Percidae (Perches), subfamily: Percinae | |||
Max. size: | 7.73 cm SL (male/unsexed) | |||
Environment: | benthopelagic; freshwater | |||
Distribution: | North America: Cumberland, Elk, Green and Muskingum river drainages of the Ohio River basin, USA. Known only to be extant in the Elk River, West Virginia. | |||
Diagnosis: | Dorsal spines (total): 11-13; Dorsal soft rays (total): 11-15; Anal soft rays: 11-13. Distinguished from populations of Crystallaria asprella of the Gulf Coast, Mississippi River and Wabash River by a combination of the following features: gape width larger approximately equal to or exceeding the inter-pelvic fin base width; a preorbital blotch distinctly separate from the anterior orbital rim; pelvic fins distinctly falcate in both sexes; cheek scale rows reduced (modally 2); opercle scale rows reduced (modally 2); number of midlateral blotches higher (modally 13); number of anal-fin rays lower (modally 13); number of dorsal-fin spines lower (modally 12); and scales below the lateral line higher (modally 11) (Ref. 74948). | |||
Biology: | Found mostly in waters with moderate flows over a sand, gravel and cobble mix of benthic substrate within the lower sections of riffles or upper parts of pools (Ref. 75199). | |||
IUCN Red List Status: | Critically Endangered (CR); Date assessed: 14 November 2011 (B1ab(iii)) Ref. (130435) | |||
Threat to humans: | harmless |