Petrocephalus binotatus is a species of electric fish in the family Mormyridae, found in the middle Congo River basin, from Pool Malebo up to the Wagenia Falls in the Democratic Republic of the Congo.Gosse, J.-P. (1984). Mormyridae. p. 63–122. En J. Daget, J.-P. Gosse y D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, París y MRAC, Tervuren. Vol. 1.
Size This species reaches a length of .
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