''Petrocephalus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fishes, is a class of bony fish. They comprise over 50% of living vertebrate species. The ray-finned fishes are so called because their fins are webs of skin supported by bony or h ...

in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Mormyridae The Mormyridae, sometimes called "elephantfish" (more properly freshwater elephantfish), are a family of weakly electric freshwater fish in the order Osteoglossiformes native to Africa. It is by far the largest family in the order with around 2 ...

. All the fish

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

of this genus are

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...

Species

There are currently 46 recognized species in this genus: * '' Petrocephalus ansorgii'' Boulenger 1903 (Agberi mormyrid) * '' Petrocephalus arnegardi'' Lavoué & Sullivan 2014 Lavoué, S. & Sullivan, J.P. (2014): ''Petrocephalus boboto'' and ''Petrocephalus arnegardi'', two new species of African electric fish (Osteoglossomorpha, Mormyridae) from the Congo River basin. ''ZooKeys, 400: 43–65.'' (Arnegard mormyrid) * ''

Petrocephalus balayi ''Petrocephalus'' is a genus of ray-finned fish in the family Mormyridae. All the fish species of this genus are endemic to Africa. Species There are currently 46 recognized species in this genus: * '' Petrocephalus ansorgii'' Boulenger 1903 (A ...

'' Sauvage 1883 (Ogooue River mormyrid) * '' Petrocephalus balteatus'' Rochebrune 1885 (Churchill snoutfish) * '' Petrocephalus bane'' ( Lacépède, 1803) * '' Petrocephalus binotatus'' Pellegrin 1924 (Ikengo mormyrid) * '' Petrocephalus boboto'' Lavoué & Sullivan 2014 (Boboto mormyrid) * ''

Petrocephalus bovei ''Petrocephalus'' is a genus of ray-finned fish in the family Mormyridae. All the fish species of this genus are endemic to Africa. Species There are currently 46 recognized species in this genus: * '' Petrocephalus ansorgii'' Boulenger 1903 (A ...

'' (

Valenciennes Valenciennes (, also , , ; nl, label=also Dutch, Valencijn; pcd, Valincyinnes or ; la, Valentianae) is a commune in the Nord department, Hauts-de-France, France. It lies on the Scheldt () river. Although the city and region experienced a ...

1847) (baby whale) * ''

Petrocephalus catostoma ''Petrocephalus'' is a genus of ray-finned fish in the family Mormyridae. All the fish species of this genus are endemic to Africa. Species There are currently 46 recognized species in this genus: * '' Petrocephalus ansorgii'' Boulenger 1903 (A ...

'' ( Günther 1866) (Churchill) * ''

Petrocephalus christyi ''Petrocephalus'' is a genus of ray-finned fish in the family Mormyridae. All the fish species of this genus are endemic to Africa. Species There are currently 46 recognized species in this genus: * '' Petrocephalus ansorgii'' Boulenger 1903 (A ...

'' Boulenger 1920 (Lindi mormyrid) * ''

Petrocephalus congicus ''Petrocephalus'' is a genus of ray-finned fish in the family Mormyridae. All the fish species of this genus are endemic to Africa. Species There are currently 46 recognized species in this genus: * '' Petrocephalus ansorgii'' Boulenger 1903 (A ...

'' L. R. David &

Poll Poll, polled, or polling may refer to: Figurative head counts * Poll, a formal election ** Election verification exit poll, a survey taken to verify election counts ** Polling, voting to make decisions or determine opinions ** Polling places o ...

1937 (Mukishi River mormyrid) * ''

Petrocephalus cunganus ''Petrocephalus'' is a genus of ray-finned fish in the family Mormyridae. All the fish species of this genus are endemic to Africa. Species There are currently 46 recognized species in this genus: * '' Petrocephalus ansorgii'' Boulenger 1903 (A ...

'' Boulenger 1910 (Cuanza River mormyrid) * ''

Petrocephalus degeni ''Petrocephalus'' is a genus of ray-finned fish in the family Mormyridae. All the fish species of this genus are endemic to Africa. Species There are currently 46 recognized species in this genus: * '' Petrocephalus ansorgii'' Boulenger 1903 (A ...

'' Boulenger 1906 (Katonga River mormyrid) * ''

Petrocephalus frieli ''Petrocephalus'' is a genus of ray-finned fish in the family Mormyridae. All the fish species of this genus are endemic to Africa. Species There are currently 46 recognized species in this genus: * '' Petrocephalus ansorgii'' Boulenger 1903 (A ...

'' Lavoué 2012 Lavoué, S. (2012): ''Petrocephalus'' Marcusen, 1854 (Osteoglossomorpha: Mormyridae) of the Bangweulu-Mweru ecoregion (Luapula River system, Congo Basin), with the description of a new species. ''Journal of Natural History, 46 (35-36): 2159-2178.'' (Luapula River mormyrid) * '' Petrocephalus gliroides'' ( Vinciguerra 1897) (Ganana River mormyrid) * '' Petrocephalus grandoculis'' Boulenger 1920 * '' Petrocephalus haullevillii'' Boulenger 1912 * '' Petrocephalus hutereaui'' ( Boulenger 1913) (Uele mormyrid) * '' Petrocephalus keatingii'' Boulenger 1901 (Fashoda mormyrid) * '' Petrocephalus leo'' Lavoué, 2016 Lavoué, S. (2016): ''Petrocephalus leo'', a new species of African electric fish (Osteoglossomorpha: Mormyridae) from the Oubangui River basin (Congo basin). ''Zootaxa, 4121 (3): 319–330.'' (Kotto elephantfish) * '' Petrocephalus levequei'' Bigorne & Paugy 1990 (Sierra Leone elephantfish) * '' Petrocephalus longianalis'' B. J. Kramer I. R. Bills, P. H. Skelton &

Wink A wink is a facial expression made by briefly closing one eye. A wink is an informal mode of non-verbal communication usually signaling shared hidden knowledge or intent. However, it is ambiguous by itself and highly dependent upon additional c ...

2012 (Lufubu River mormyrid) * '' Petrocephalus longicapitis'' B. J. Kramer, I. R. Bills, P. H. Skelton &

2012 (Katima Mulilo mormyrid) * '' Petrocephalus magnitrunci'' B. J. Kramer, I. R. Bills, P. H. Skelton &

2012 (Okavango mormyrid) * '' Petrocephalus magnoculis'' B. J. Kramer, I. R. Bills, P. H. Skelton &

2012 (Cunene River mormyrid) * ''

Petrocephalus mbossou ''Petrocephalus'' is a genus of ray-finned fish in the family Mormyridae. All the fish species of this genus are endemic to Africa. Species There are currently 46 recognized species in this genus: * '' Petrocephalus ansorgii'' Boulenger 1903 (A ...

'' Lavoué, Sullivan & Arnegard 2010 (Mbossou mormyrid) * '' Petrocephalus microphthalmus'' Pellegrin 1908 (smallhead mormyrid) * '' Petrocephalus odzalaensis'' Lavoué, Sullivan & Arnegard 2010 (Odzala mormyrid) * '' Petrocephalus okavangensis'' B. J. Kramer, I. R. Bills, P. H. Skelton &

2012 (Thoage River mormyrid) * '' Petrocephalus pallidomaculatus'' Bigorne & Paugy, 1990 (Bamako mormyrid) * '' Petrocephalus pellegrini''

1941 (Nuon mormyrid) * '' Petrocephalus petersi'' B. J. Kramer, I. R. Bills, P. H. Skelton &

2012 (Zambezi mormyrid) * '' Petrocephalus pulsivertens'' Lavoué, Sullivan & Arnegard 2010 (Odzala mormyrid) * '' Petrocephalus sauvagii'' ( Boulenger 1887) (Sauvage's mormyrid) * '' Petrocephalus schoutedeni''

1954 (Yangambi mormyrid) * '' Petrocephalus similis'' Lavoué 2011 Lavoué, S. (2011): A new species of ''Petrocephalus'' Marcusen 1854 (Osteoglossomorpha: Mormyridae) from the Sanaga River basin, Cameroon. ''Zootaxa, 2934: 20-28.'' (Sanaga mormyrid) * '' Petrocephalus simus'' Sauvage 1879 (roundnose mormyrid) * '' Petrocephalus soudanensis'' Bigorne & Paugy 1990 (Loutou mormyrid) * '' Petrocephalus squalostoma'' ( Boulenger 1915) (Lukinda mormyrid) * '' Petrocephalus steindachneri'' Fowler 1958 (Msola mormyrid) * '' Petrocephalus stuhlmanni'' Boulenger 1909 (Kingani mormyrid) * '' Petrocephalus sullivani'' Lavoué, C. D. Hopkins & Kamdem Toham 2004 (Sullivan's mormyrid) * '' Petrocephalus tanensis'' Whitehead & Greenwood 1959 Kramer, B., Bills, R., Skelton, P. & Wink, M. (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.'' (Tana-churchill) * '' Petrocephalus tenuicauda'' ( Steindachner 1894) (Junk mormyrid) * '' Petrocephalus valentini'' Lavoué, Sullivan & Arnegard 2010 (Lekoli mormyrid) * '' Petrocephalus wesselsi'' B. J. Kramer & van der Bank 2000 (Southern Churchill) * '' Petrocephalus zakoni'' Lavoué, Sullivan & Arnegard 2010 (Zakon mormyrid)

References

* Weakly electric fish Mormyridae Fish of Africa Ray-finned fish genera {{Osteoglossiformes-stub