Author: Marcusen, 1854
Silvery on flanks and belly, with greenish or bluish hue, countershaded; often dark markings on or below dorsal fin and on caudal fin. Nostrils very close together; mouth inferior, body rather deep; head often with peculiar aggregations of sensory organs (electroreceptors) (Rosette , photo) (Rosettes of Petrocephalus , drawing).
Species and subspecies:
Petrocephalus ansorgii
Petrocephalus ballayi
Petrocephalus bane
Petrocephalus bane bane
Petrocephalus bane comoensis
Petrocephalus binotatus
Petrocephalus bovei
Petrocephalus catostoma
Petrocephalus catostoma catostoma
Petrocephalus catostoma congicus
Petrocephalus catostoma haullevillei
Petrocephalus catostoma tanensis
Petrocephalus christyi
Petrocephalus cunganus
Petrocephalus gliroides
Petrocephalus grandoculis
Petrocephalus guttatus
Petrocephalus hutereaui
Petrocephalus keatingii
Petrocephalus levequei
Petrocephalus microphthalmus
Petrocephalus pallidomaculatus
Petrocephalus pellegrini
Petrocephalus sauvagii
Petrocephalus schoutedeni
Petrocephalus simus
Petrocephalus soudanensis
Petrocephalus squalostoma
Petrocephalus steindachneri
Petrocephalus tenuicauda