Petrocephalus
Petrocephalus | ||||||||||||
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Systematics | ||||||||||||
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Scientific name of the subfamily | ||||||||||||
Petrocephalinae | ||||||||||||
Tavern , 1972 | ||||||||||||
Scientific name of the genus | ||||||||||||
Petrocephalus | ||||||||||||
Marcusen , 1854 |
Petrocephalus is agenus ofAfrican freshwater fish from the Nilhechte family(Mormyridae). In German they are also called boxernil pike because of their blunt snouts.
features
Petrocephalus species grow to be 5.2 to 20 centimeters long. Your body is relatively short, high back and flattened on the sides. The caudal peduncle is narrow, the caudal fin always forked.
In contrast to the other species of Nilhecht, they have a basic phenoid (sphenoid bone). The first two rays of the dorsal fin are unsegmented (in the other genera only the first), all others are segmented. The nostrils are close together and are located below or just a little in front of the front edge of the eye. The mouth is more or less subordinate and is below or only slightly in front of the front edge of the eyes. The dorsal fin and anal fin sit far back on the body and are almost symmetrically opposite each other.
Like all Nilhechte, Petrocephalus has the ability for electrical orientation and communication.
Systematics
Petrocephalus is basal to all other Nilhechtgenus and is therefore classified in a separate subfamily, the Petrocephalinae, while all other Nilhechtgenus form the subfamily Mormyrinae .
species
There are over 40 types :
- Petrocephalus ansorgii Boulenger, 1903
- Petrocephalus arnegardi Lavoué & Sullivan, 2014
- Petrocephalus balayi Sauvage, 1883
- Petrocephalus bane (Lacepède, 1803)
- Petrocephalus binotatus Pellegrin, 1924
- Petrocephalus boboto Lavoué & Sullivan, 2014
- Petrocephalus bovei (Valenciennes, 1847)
- Petrocephalus catostoma (Günther, 1866)
- Petrocephalus christyi Boulenger, 1920
- Petrocephalus congicus David & Poll, 1937
- Petrocephalus cunganus Boulenger, 1910
- Petrocephalus degeni Boulenger, 1906
- Petrocephalus frieli Lavoué, 2012
- Petrocephalus gliroides (Vinciguerra, 1897)
- Petrocephalus grandoculis Boulenger, 1920
- Petrocephalus guttatus Fowler, 1936
- Petrocephalus haullevillei Boulenger, 1912
- Petrocephalus hutereaui (Boulenger, 1913)
- Petrocephalus keatingii Boulenger, 1901
- Petrocephalus leo Lavoué, 2016
- Petrocephalus levequei Bigorne & Paugy, 1990
- Petrocephalus longianalis Kramer, Bills, Skelton & Wink, 2012
- Petrocephalus longicapitis Kramer, Bills, Skelton & Wink, 2012
- Petrocephalus magnitrunci Kramer, Bills, Skelton & Wink, 2012
- Petrocephalus magnoculis Kramer, Bills, Skelton & Wink, 2012
- Petrocephalus mbossou Lavoué, Sullivan & Arnegard, 2010
- Petrocephalus microphthalmus Pellegrin, 1908
- Petrocephalus odzalaensis Lavoué, Sullivan & Arnegard, 2010
- Petrocephalus okavangensis Kramer, Bills, Skelton & Wink, 2012
- Petrocephalus pallidomaculatus Bigorne & Paugy, 1990
- Petrocephalus pellegrini Poll, 1941
- Petrocephalus petersi Kramer, Bills, Skelton & Wink, 2012
- Petrocephalus pulsivertens Lavoué, Sullivan & Arnegard, 2010
- Petrocephalus sauvagii (Boulenger, 1887)
- Petrocephalus schoutedeni Poll, 1954
- Petrocephalus similis Lavoué, 2011
- Petrocephalus simus Sauvage, 1879
- Petrocephalus soudanensis Bigorne & Paugy, 1990
- Petrocephalus squalostoma (Boulenger, 1915)
- Petrocephalus sullivani Lavoué, Hopkins & Kamdem Toham, 2004
- Petrocephalus tanensis Whitehead & Greenwood, 1959
- Petrocephalus tenuicauda (Steindachner, 1895)
- Petrocephalus valentini Lavoué, Sullivan & Arnegard, 2010
- Petrocephalus wesselsi Kramer & van der Bank, 2000
- Petrocephalus zakoni Lavoué, Sullivan & Arnegard, 2010
literature
- Melanie Stiassny, Guy Teugels & Carl D. Hopkins: The Fresh and Brackish Water Fishes of Lower Guinea, West-Central Africa, Volume 1. ISBN 9789074752206
- 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. doi: 10.1080 / 00222933.2012.708452
Web links
- Petrocephalus on Fishbase.org (English)