Brummett, R., Mbe Tawe, A.N., Dening Touokong, C., Reid, G.M., Snoeks, J. Staissny, M., Moelants, T., Mamonekene, V., Ndodet, B., Ifuta, S.N.B., Chilala, A., Monsembula, R., Ibala Zamba, A., Opoye Itoua, O., Pouomogne, V., Darwall, W. & Smith, K.
Petrocephalus guttatus is only known from the paratypes from Batangafo, Chari system, Central African Republic. The holotype is known from 30 km east of Kribi, Cameroon. The species may be more widespread than is currently known. More information is needed on the species distribution before an assessment can be made.