| Leuciscidae (Minnows), subfamily: Laviniinae |
| 38 cm TL (male/unsexed) |
|
benthopelagic; freshwater, potamodromous |
| North America: upper Colorado River drainage in Wyoming, Colorado, Utah and Arizona, USA. |
|
Body deep and compressed; caudal peduncle long, extremely slender; fins falcate; caudal fin large, forked; angle along anal fin base continues along upper edge of caudal fin. Large-sized individuals possess large, nearly scaleless hump behind small, depressed head; mouth subterminal, extending to front of small eye; 73-90 scales on lateral line; usually 9 dorsal rays; 10 anal rays; pharyngeal teeth 2,5-4.2. Dark olive-gray above, silver side (Ref. 86798). |
| Inhabits swift, rocky runs and flowing pools. The hump at the back of the head directs fish to maintain position in the swift water (Ref. 86798). |
|
Endangered (EN); Date assessed: 10 February 2012 (B2ab(v)) Ref. (130435)
|
| harmless |
|
Known from the upper Colorado River drainage in Wyoming, Colorado, Utah and Arizona (Ref. 86798). Also Ref. 3814, 5723.
Status of threat: endangered; status same as 1989. Criteria: 1,3,4 (http://fisc.er.usgs.gov/afs/) (Ref. 81264). |
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