Petrocephalus catostoma, the Churchill, is a species of electric fish in the family Mormyridae, found in the Rovuma River system including the Niassa Reserve, and the western confluences to Lake Malawi.Kramer, B., R. Bills, P. Skelton and M. Wink, 2012. A critical revision of the churchill snoutfish, genus Petrocephalus Marcusen, 1854 (Actinopterygii: Teleostei: Mormyridae), from southern and eastern Africa, with the recognition of Petrocephalus tanensis, and the description of five new species. Journal of Natural History 46(35-36):2179-2258.
Size This species reaches a length of .
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