Labeobarbus roylii (Boulenger, 1912)

Family:  Cyprinidae (Minnows or carps), subfamily: Torinae
Max. size:  55 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  Africa: Lower Guinea endemic, known from the Chiloango (Ref. 2801, 81639, 120641) and the Kouilou River basins (Ref. 81639).
Diagnosis:  Dorsal soft rays (total): 12-12; Anal soft rays: 8-9. Diagnosis: mouth inferior; lips extremely well-developed; two pairs of well-developed barbels, anterior pair 1-1.3, posterior pair 1.3-2x eye diameter; last simple ray of dorsal fin ossified, measuring 0.5-0.67x HL (Ref. 81639). Description: large species; lips excessively developed, lower lip with large rounded mental lobe; scales longitudinally striated; scale formula: 4.5-5/27-32/4-4.5/2.5/12-14; D: III, 9; A: III, 5-6; lateral line complete; dorsal fin with deeply notched border (Ref. 81639). Coloration: ground color olive-brown dorsally, whitish ventrally; dorsal scales with dark basal marking; fins greyish brown (Ref. 81639).
Biology: 
IUCN Red List Status: Endangered (EN); Date assessed: 16 February 2009 (B2ab(iii)) Ref. (130435)
Threat to humans:  harmless


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