Mamonekene, Victor.Ibala Zamba, Armel.Stiassny, Melanie L. J.2018-12-272018-12-272018-12-26http://digitallibrary.amnh.org/handle/2246/692116 pages : illustrations (chiefly color), color map ; 26 cm.A new species of smiliogastrin cyprinid is described from the Louesse, Lekoumou (upper Niari basin), and Djoulou (upper Ogowe basin) rivers in the Republic of Congo, west-central Africa. The new species is readily distinguished from congeners by the presence of a flexible, weakly ossified and smooth bordered last unbranched dorsal-fin ray, well-developed barbels, and a straight and complete lateral line in combination with a characteristic pigmentation patterning consisting of a distinctive, rounded black spot at the base of and extending over the first rays of the anal fin and a prominent, darkly pigmented blotch over the base of the anterior dorsal-fin rays. A combination of morphological features and pigmentation patterning that appears to be unique among Enteromius. The new species is widespread throughout the Louesse-Djoulou region, and the fact that such a seemingly common species has gone undetected until now serves to underscore how poorly known this region of the Republic of Congo remains.en-USEnteromius walshae.Barbs (Fish)Freshwater fishes.Congo (Brazzaville)