Coelotilapia joka
Coelotilapia joka | ||||||||||||
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Systematics | ||||||||||||
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Scientific name of the tribe | ||||||||||||
Coelotilapiini | ||||||||||||
Dunz & Schliewen , 2013 | ||||||||||||
Scientific name of the genus | ||||||||||||
Coelotilapia | ||||||||||||
Dunz & Schliewen, 2013 | ||||||||||||
Scientific name of the species | ||||||||||||
Coelotilapia joka | ||||||||||||
( Thys van den Audenaerde , 1969) |
Coelotilapia joka ( Syn .: Tilapia joka ) is an African species of cichlid that occurs in the lower reaches of the rivers of Sierra Leone and western Liberia .
features
Coelotilapia joka becomes a maximum of 9.6 cm long, has a typical cichlid shape and a rounded head profile. There are 7 to 8 dark bands on the sides of the body, which are wider than the light spaces between them. A tilapia spot on the dorsal fin is missing. The pelvic fins are pointed. The teeth of the outer rows in both jaws are two-pointed, the teeth of the inner rows are smaller and three-pointed. The lower pharyngealia are as long as they are wide and have grown together with the fifth ceratobranchial (lower pharyngeal jaw). The toothless front section of the pharyngealia is shorter or as long as the dentate area. The pharynx teeth are two- and three-pointed. On the first gill arch there are 8 to 11 gill trap rays . Micro-gill rakes are missing. The scales are cycloid .
- Fin formula : Dorsal XV – XVII / 11–13; Anal III / 8-9.
- Scale formula : mLR 26–27.
Danger
In the Red List of the IUCN status of the species as endangered (Vulnerable) is specified.
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, 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
Web links
- Coelotilapia joka on Fishbase.org (English)
- Coelotilapia joka inthe IUCN Red List of Threatened Species 2013.2. Posted by: Bousso, T. & Lalèyè, P., 2006. Retrieved February 9, 2014.