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Localities map of Petrocephalus haullevillii (From Boulenger 1912)

Petrocephalus sullivani, Ivindo River at Loa-Loa rapids, Gabon

Petrocephalus sullivani, male, tag 4764, La Lopé, Ogooué River, Gabon

Photograph of a preserved specimen of Petrocephalus balayi from Odzala National Park (scale bar = 1.0 cm)

Photograph of a preserved specimen of Petrocephalus arnegardi from Odzala National Park

Photograph of a preserved specimen of Petrocephalus christyi from Odzala National Park (scale bar = 1.0 cm)

Petrocephalus bovei, Baro River (White Nile) near Gambella, Ethiopia

Photograph of a preserved specimen of Petrocephalus grandoculis from Odzala National Park (scale bar = 1.0 cm)

Marcusenius squalostoma Boulenger (= Petrocephalus squalostoma) syntype MRAC 14353, Lukinda River-L.Moero, D.R. Congo

Petrocephalus binotatus Pellegrin holotype MRAC 1519, Congo River at Ikengo, Democratic Republic of Congo

Illustration of the holotype of Mormyrus amblystoma from Boulenger (1909-1916)

Illustration of Petrocephalus ansorgii from Boulenger (1909-1916)

Petrocephalus arnegardi holotype CUMV 88074, male, 72.6 mm SL, Pandaka River, Odzala National Park, Republic of Congo

Petrocephalus pulsivertens, male, Congo basin, Odzala National Park, Republic of Congo

Petrocephalus sauvagii, tag no. 4075 (2002), Odzala National Park, Rep. Congo, Lékoli River, Congo basin

Petrocephalus valentini, male, Congo basin, Odzala National Park, Republic of Congo

Petrocephalus similis from the Djerem River near the village of Mbakaou, Adamoua province, Cameroon.

Petrocephalus okavangensis Kramer, Bills, Skelton & Wink, holotype SAIAB 030046, Thoage River, Okavango, Botswana

Petrocephalus petersi Kramer, Bills, Skelton & Wink holotype SAIAB 060846, Zambesi River, Mozambique

Petrocephalus christyi Boulenger 77 mm TL, Luachimo River, Angola. From Poll (1967).

Photograph of the preserved holotype of Petrocephalus valentini (CU 88117) from Odzala National Park (scale bar = 1.0 cm)

Photograph of the preserved holotype of Petrocephalus zakoni (CU 88101) from Odzala National Park (scale bar = 1.0 cm)

Petrocephalus microphthalmus EOD waveform

Petrocephalus simus EOD waveform

Petrocephalus ansorgii Boulenger holotype (unique) BMNH 1902.10.25.1, Agberi, Lower Niger River Delta, Nigeria

Petrocephalus balayi Sauvage holotype MNHN A-6297, Ogôoué River, Gabon.

Petrocephalus degeni Boulenger holotype BMNH 1906.5.30.84, Mouth of Katonga River, Lake Victoria [Victoria Nyanza], Uganda

Photograph of the preserved holotype of Petrocephalus odzalaensis (CU 88048) from Odzala National Park (scale bar = 1.0 cm)

Illustration of Petrocephalus christyi from Boulenger (1920)

Illustration of Petrocephalus cunganus from Boulenger (1909-1916)

Petrocephalus grandoculis, male, Congo basin, Odzala National Park, Republic of Congo

Illustration of Petrocephalus grandoculis from Boulenger (1920)

Illustration of Petrocephalus sauvagii from Boulenger (1909-1916)

Illustration of Petrocephalus schoutedeni from Poll (1954)

Illustration of Petrocephalus simus from Sauvage (1879)

Live photograph of the holotype of Petrocephalus mbossou (CU 92389) from Odzala National Park (no scale)

Petrocephalus longicapitis Kramer, Bills, Skelton & Wink, Upper Zambezi River at Katima Mulilo, Namibia

Petrocephalus magnitrunci Kramer, Bills, Skelton & Wink holotype SAIAB 67069, Okavango Delta, Boro R., Botswana

Petrocephalus magnoculis Kramer, Bills, Skelton & Wink, paratype ZSM 38659, Cunene River, Namibia

Petrocephalus simus Sauvage 98 mm TL, from Poll 1967

Petrocephalus microphthalmus Pellegrin 51 mm SL, Cuílo River, Angola. From Poll (1967).

Photograph of the preserved holotype of Petrocephalus pulsivertens (CU 88085) from Odzala National Park (scale bar = 1.0 cm)

Photograph of a preserved specimen of Petrocephalus sauvagii from Odzala National Park (scale bar = 1.0 cm)

Illustration of Petrocephalus catostoma from Boulenger (1909-1916)

Illustration of Petrocephalus keatingii from Boulenger (1909-1916)

Petrocephalus balayi EOD waveform

Petrocephalus bovei EOD waveform

Illustration of Petrocephalus bane from Boulenger's Fishes of the Nile (1907), specimen from "near Cairo."

Petrocephalus balayi, sex undetermined, Congo basin, Odzala National Park, Republic of Congo

Petrocephalus microphthalmus, sex undetermined, Congo basin, Odzala National Park, Republic of Congo

Petrocephalus odzalaensis, male, Odzala National Park, Congo River, Gabon

Petrocephalus stuhlmanni congicus David & Poll (=Petrocephalus congicus) and Petrocephalus stuhlmanni haullevillei Boulenger

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