Petrocephalus magnoculis is a species of electric fish in the family Mormyridae. It is found in the Cunene River below the Ruacana Falls in Namibia and Angola.
This species reaches a length of .
The fish's name means magnus (L.), "great"; oculus (L.), "eye", referring to its large eye diameter (25.9âÂÂ32.9% of the head length).