The butterfly barb (Enteromius hulstaerti) is a species of cyprinid fish in the genus Enteromius. Lévêque, C. and J. Daget, 1984. Cyprinidae. p. 217–342. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, Paris and MRAC, Tervuren. Vol. 1.
Size This species reaches a length of .
Etymology The fish is named in honor of Révérend Père Gustaaf Hulstaert (1900–1990), an entomologist, botanist and missionary in the Belgian Congo, who collected the type specimen.
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