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Comprehensive Description

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Genus Doumea Sauvage ZBK

Doumea ZBK species are firm-bodied, streamlined and tapered, with pointed heads, long, slender depressed caudal peduncles, and the fins large and falcate. The vertebrae show varying degree of development of expanded bony flanges but, unlike other doumeine genera, these do not form perpendicular bony plates at the body surface. However in some species the flange-like neural and haemal vertebral spines do reach the body surface to form median bony ridges and the caudal peduncle is rigid and hard-surfaced. The mouth is generally small with thick papillose lips and tapered papillose barbels. The teeth are either minute, vestigial or absent. Two species are described from the WCA region ( Doumea typica Sauvage, 1878 ZBK and D. thysi Skelton, 1989 ZBK ) and two new species from Cameroon are recognized here and described below.

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