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Romanogobio ciscaucasicus (Berg, 1932) North Caucasian longbarbel gudgeon |
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photo by
Naseka, A.M. |
| Family: | Gobionidae (Gudgeons) | |||
| Max. size: | 15 cm TL (male/unsexed); max. reported age: 6 years | |||
| Environment: | benthopelagic; freshwater | |||
| Distribution: | Europe and Asia: Western Caspian basin from Kuma (Russia) to Yalaminskie (Azerbaijan) drainages. | |||
| Diagnosis: | Posterior neurocranium width 71.4-83.9% of cranium roof length; anterior neurocranium width 30.9-40.7 of cranium roof length; eye diameter 1.5-2.6 times in interorbital distance; supraorbital and infraorbital sensory cephalic canals disconnected (Ref. 52363). Diagnosed from its congeners in Black and Caspian Sea basin by the possession of the following characters: eye diameter 1.5-2.6 times in interorbital distance; predorsal scales with longitudinal epithelial crests; scale rows around caudal peduncle 12-16; dorsal fin with 7½ branched rays; anal fin with 6½ branched rays; anus closer to pelvic origin than to anal origin; greatest head width 59-72% of dorsal head length (Ref. 59043). | |||
| Biology: | Inhabits streams and rivers stretches with fast current and gravel bottom (Ref. 59043). Feeds on Trichoptera larvae (Ref. 59043). Spawns at the end of May (Ref. 1441). | |||
| IUCN Red List Status: | Least Concern (LC); Date assessed: 01 January 2008 Ref. (130435) | |||
| Threat to humans: | harmless | |||