Gnathochromis permaxillaris

Gnathochromis permaxillaris
	Gnathochromis permaxillaris
Systematics
Order :	Cichliformes
Family :	Cichlids (Cichlidae)
Subfamily :	Pseudocrenilabrinae
Tribe :	Limnochromini
Genre :	Gnathochromis
Type :	Gnathochromis permaxillaris
Scientific name
	Gnathochromis permaxillaris
	( David , 1936)

Gnathochromis permaxillaris ( Syn .: Limnochromis permaxillaris ) is a species of cichlid that is endemic to the East African Lake Tanganyika . Etymology : Gr .: "Gnathos" = pine + chromis , a genus of damselfish in which cichlids were previously classified.

features

Gnathochromis permaxillaris can reach a length of 15 cm. It is flattened on the sides, rather high-backed for a Lake Tanganyika cichlid, and has a pointed, loud-mouthed head. The jaws are highly mobile and when they are pushed forward they form a funnel with which the small zooplankton animals that make up the food are sucked in and then filtered out with the gill rake. The basic color is silvery pink and the reddish shimmer becomes stronger and stronger towards the tail. The head is iridescent green, body and tail bluish. The pectoral and anal fin are yellowish.

Way of life

Gnathochromis permaxillaris is rare, lives on muddy sandy soils at depths of 5 to 200 meters and feeds on plankton. Like all other Limnochromini , Gnathochromis permaxillaris is a mouthbrooder . Eggs and fry are protected by the female and male.

Systematics

The fish species was described in 1936 by Lore Rose David under the scientific name Limnochromis permaxillaris , and in 1981 Max Poll assigned it as a type of the newly introduced genus Gnathochromis . Within the African cichlids ( Pseudocrenilabrinae ) the species is assigned to the tribe Limnochromini , while the second species of the genus Gnathochromis , Gnathochromis pfefferi, belongs to the tribe Tropheini . Gnathochromis pfefferi must therefore be placed in a different genus.

literature

Pierre Brichard: The Big Book of Tanganyika Cichlids. With all the other fish on Lake Tanganyika. Bede Verlag, 1995, ISBN 3-927997-94-3 , p. 274.
Søren Neergaard: Tanganyika - Cichlids. Kernen Verlag, 1982, ISBN 3-87401-005-8 , p. 110.

Web links

Gnathochromis permaxillaris on Fishbase.org (English)

Individual evidence

↑ Nina Duftner, Stephan Koblmüller, Christian Sturmbauer: Evolutionary Relationships of the Limnochromini, a Tribe of Benthic Deepwater Cichlid Fish Endemic to Lake Tanganyika, East Africa. In: Journal of Molecular Evolution. Volume 60, Number 3, March 2005, pp. 277-289. doi: 10.1007 / s00239-004-0017-8
↑ Christian Sturmbauer, Ursula Hainz, Sanja Baric, Erik Verheyen, Walter Salzburger: Evolution of the tribe Tropheini from Lake Tanganyika: synchronized explosive speciation producing multiple evolutionary parallelism. In: Hydrobiologia. Volume 500, Issue 1, June 2003, pp. 51-64. doi: 10.1023 / A: 1024680201436
↑ TD Kocher, JA Conroy, KR McKaye, JR Stauffer, SF Lockwood: Evolution of NADH dehydrogenase in East African cichlid fish. In: Mol Phylogenet Evol. 4 (4), 1995, p. 420.
^ W. Salzburger, A. Meyer, S. Baric, E. Verheyen, C. Sturmbauer: Phylogeny of the Lake Tanganyika cichlid species flock and its relationship to the Central and East African haplochrominecichlid fish faunas. In: Syst Biol. 51 (1), 2002, pp. 1-23.

[1] Nina Duftner, Stephan Koblmüller, Christian Sturmbauer: Evolutionary Relationships of the Limnochromini, a Tribe of Benthic Deepwater Cichlid Fish Endemic to Lake Tanganyika, East Africa. In: Journal of Molecular Evolution. Volume 60, Number 3, March 2005, pp. 277-289. doi: 10.1007 / s00239-004-0017-8

[2] Christian Sturmbauer, Ursula Hainz, Sanja Baric, Erik Verheyen, Walter Salzburger: Evolution of the tribe Tropheini from Lake Tanganyika: synchronized explosive speciation producing multiple evolutionary parallelism. In: Hydrobiologia. Volume 500, Issue 1, June 2003, pp. 51-64. doi: 10.1023 / A: 1024680201436

[3] TD Kocher, JA Conroy, KR McKaye, JR Stauffer, SF Lockwood: Evolution of NADH dehydrogenase in East African cichlid fish. In: Mol Phylogenet Evol. 4 (4), 1995, p. 420.

[4] W. Salzburger, A. Meyer, S. Baric, E. Verheyen, C. Sturmbauer: Phylogeny of the Lake Tanganyika cichlid species flock and its relationship to the Central and East African haplochrominecichlid fish faunas. In: Syst Biol. 51 (1), 2002, pp. 1-23.