Coptodon

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Coptodon
Coptodon rendalli

Coptodon rendalli

Systematics
Ovalentaria
Order : Cichliformes
Family : Cichlids (Cichlidae)
Subfamily : Pseudocrenilabrinae
Tribe : Coptodonini
Genre : Coptodon
Scientific name of the  tribe
Coptodonini
Dunz & Schliewen , 2013
Scientific name of the  genus
Coptodon
Gervais , 1853

Coptodon ( Syn .: Dagetia Thys van den Audenaerde, 1969) is a genus of cichlids thatis widespreadin most of Africa and in the Jordan . The genus originally had the rank of a sub-genus within the formerly paraphyletic genus Tilapia and was raised to the genus rank in 2013 by Dunz and Schliewen.

distribution

The distribution area of Coptodon extends in West Africa from the mouth of Senegal to the mouth of the Kunene in the south and in this area includes the rivers Corubal , Lofa , Saint Paul , Cavally , Comoé , Bandama , Bia , the upper Sassandra , the Pra , and Volta , Niger , Schari , Sanaga , Ogooué , Kouilou , Zambezi , Okavango , Cuanza , the Volta reservoir and the Bosumtwisee in Ghana, the Cameroonian crater lakes Barombi Koto , Bermin , Ejagham and Mboandong , the Nigerian Kainji reservoir , Lake Chad , the central Congo Basin , Malebo Pool , as well as the Ubangi , Uelle , Kasai and Lualaba . In East Africa the genus occurs in Lake Albert , Lake Tanganyika , Lake Turkana and Lake Malawi , as well as in North Africa in southern Morocco ( Wadi Draa ), in the oases of the Ahaggar Mountains in southern Algeria, in the Nile and Jordan in the Middle East ( Coptodon zillii ).

features

Coptodon species have a typical, moderately high-backed cichlid shape, reach body lengths between 6.5 ( Coptodon gutturosa ) and 32 ( Coptodon cameronensis ) cm, often show 6 to 8 vertical stripes on the sides of the body, which branch out in a Y-shape near the dorsal fin and mostly a red color on the chest and abdomen. They are exclusively or predominantly herbivores and substrate spawners . The body is covered with round scales. 23 to 29 lie in a central longitudinal row. Like all cichlids, coptodons have two sidelines . Further characteristics typical of the genus are the lower pharyngeal jaw consisting of the fused fifth ceratobranchials , which is as wide as it is long and has a front keel that is shorter or almost as long as the dentate area. The rear pharynx teeth are two- (only C. gutturosa ) to five-pointed (only C. nigrans ). The first gill arch carries 10 to 17 gill rakes. In both jaws the teeth of the outer row of teeth are two-pointed, those of the inner row are small and three-pointed. The dorsal fin is supported by 13 to 17 hard rays. It shows a typical tilapia stain . The pelvic fins are pointed. With the exception of fully-grown specimens of C. congica and C. tholloni , the fish do not show any forehead humps.

species

Coptodon kottae
Coptodon margaritacea
Coptodon tholloni
Coptodon zillii

There are also at least three species that have not yet been described:

  • Coptodon sp. aff. guineensis "Cross"
  • Coptodon sp. aff. zillii "Kisangani"
  • Coptodon sp. aff. louka “Samou”.

literature

  • Andreas R. Dunz, Ulrich K. Schliewen: Molecular phylogeny and revised classification of the haplotilapiine cichlid fishes formerly referred to as “Tilapia”. Molecular Phylogenetics and Evolution, Volume 68, Issue 1, July 2013, Doi: 10.1016 / j.ympev.2013.03.015
  • Andreas R. Dunz: Revision of the substrate brooding “Tilapia” (Tilapia Smith, 1840 and related taxa), (Teleostei: Perciformes: Cichlidae). Dissertation to obtain a doctorate from the Faculty of Biology at the Ludwig Maximilians University of Munich, Munich, 2012, PDF

Individual evidence

  1. ↑ Coptodon gutturosa on Fishbase.org (English)
  2. ↑ Coptodon cameronensis on Fishbase.org (English)
  3. ^ Claudia Dickinson: The Coptodon of Lake Bermin, Cameroon. PDF ( Memento of the original from March 13, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.faas.info
  4. ↑ Melanie LJ Stiassny, Ulrich K. Schliewen, Wallace J. Dominey (1992c): A new species flock of cichlid fishes from Lake Bermin, Cameroon, with a description of eight new species of Tilapia (Labroidei: Cichlidae). Ichthyological Exploration of Freshwaters 3 (4), pp. [322-324, Pl. 1b, Figs. 5-6]
  5. ↑ Andreas R. Dunz & Ulrich K. Schliewen: Description of a Coptodon (Coptodon) species flock of Lake Ejagham (Cameroon), including a redescription of Coptodon deckerti Thys van den Audenaerde, 1967. Spixiana, 33 2 251-280 Munich, November 2010 ISSN  0341-8391 PDF

Web links

Commons : Coptodon  - collection of images, videos and audio files