Petrocephalus grandoculis is a species of electric fish in the family Mormyridae, widespread in the lower and middle Congo River basin in the Central African Republic, Democratic Republic of the Congo and the Republic of Congo in Africa.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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