Thoracochromis wingatii

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Thoracochromis wingatii
Drawing of the holotype from "The Fishes of the Nile" by George Albert Boulenger

Drawing of the holotype from "The Fishes of the Nile" by George Albert Boulenger

Systematics
Order : Cichliformes
Family : Cichlids (Cichlidae)
Subfamily : Pseudocrenilabrinae
Tribe : Haplochromini
Genre : Thoracochromis
Type : Thoracochromis wingatii
Scientific name
Thoracochromis wingatii
( Boulenger , 1902)

Thoracochromis wingatii is an African cichlid species thatoccursin Lake Albert and the Nile .

features

Thoracochromis wingatii becomes twelve centimeters long. Males are gray-blue in color. Two dark stripes run between the upper lip and the eyes, another one extends from the neck through the eyes to the underside of the head. A dark longitudinal stripe, which can also be reduced to a row of spots, begins at the rear edge of the eye and ends on the tail stalk. There are two dark, vertical lines on the gill cover. On the unpaired fins there are some blackish or brownish rows of dots. The males show some large, yellow egg spots on the anal fin. Females are more inconspicuously colored and gray-brown in color. The dark stripes and spots of the males are only slightly visible. Both sexes show eight or nine cross bars on the sides of the body, depending on their mood.

Like all Haplochromis congeners is thoracochromis wingatii a ovophiler mouthbrooders in which the female takes care of the brood. To spawn, the males dig shallow spawning pits with a diameter of about 10 cm in the bottom of the water.

Systematics

The cichlid species was described as Paratilapia wingatii by the Belgian-British ichthyologist George Albert Boulenger in 1943 . The terra typica is located near Gondokoro on the Bahr al-Jabal , a section of the Nile in South Sudan. In 1904 the French ichthyologist Jacques Pellegrin synonymized the species with Astatotilapia desfontainii , in 1922 it was revalidated again by the American ichthyologist Charles Tate Regan . The British ichthyologist Peter Humphry Greenwood placed the species in the genus Haplochromis in 1971 . 1979 Greenwood introduced the genus Thoracochromis , with Thoracochromis wingatii as a type species . All other Thoracochromis species occur geographically separated from Thoracochromis wingatii in the lower Congo Basin and in Angola. Phylogenetically, they belong to a family group of cichlid genera from southern Africa, which, derived from the genus Serranochromis, has received the provisional name "Serranochromini", while Thoracochromis wingatii is a species from the "Lake Victoria region superflock", i.e. the cichlid radiation that occurs in the Victoria , in Kivu , in Albert , in the Lake Edward in, Lake George , in the Lake Kyoga , in Turkanasee , in the Lake Rukwa and lake nabugabo occurs almost exclusively of the genus Haplochromis is assigned. The genus Thoracochromis is thus polyphyletic and its type species is closer to the genus Haplochromis than the other species of the genus Thoracochromis .

Individual evidence

  1. ↑ a b Anton Lamboj: The cichlids of western Africa. Nature and Animals, 2006, ISBN 3-86659-000-8 . Page 238.
  2. ↑ George Albert Boulenger (1902): List of the fishes collected by Mr. WLS Loat at Gondokoro. Annals and Magazine of Natural History (Series 7) v. 10 (no. 57) (art. 38): 260-264.
  3. ↑ Peter Humphry Greenwood (1971): On the cichlid fish Haplochromis wingatii (Blgr.), And a new species from the Nile and Lake Albert. Revue de Zoologie et de Botanique Africaines v. 84 (nos 3-4): 344-365.
  4. ↑ Matschiner, M., Musilová, Z., Barth, JMI, Starostová, Z., Salzburger, W., Steel, M. & Bouckaert, R. (2017): Bayesian Phylogenetic Estimation of Clade Ages Supports Trans-Atlantic Dispersal of Cichlid Fishes. Systematic Biology, 66 (1): 3-22. DOI: 10.1093 / sysbio / syw076 , page 154 in the supplement.

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