Mazarunia
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| Scientific name | ||||||||||||
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| Kullander , 1990 |
Mazarunia is a genus of small cichlids that is endemic to upper Mazaruni in Guiana in northeastern South America.
features
Mazarunia species are 5.5 to 8.5 cm long and have a typical squat cichlid shape. In terms of color, they are characterized by blackish spots with a lighter, gray to brownish basic color. They differ from all other species of cichlids of the Geophagini tribe . a. due to the lack of the sixth infraorbitalia (eye ring bones), scales of equal size on the lateral and lower chest region, smooth edges in the preoperculum , supracleithrum (a bone of the shoulder girdle) and extrascapulars (a skull bone), two or three tooth plates on the fourth ceratobranchiale (“lower Schlundkiefer ”) and an interrupted lateral line scaling . There are three rows of scales between the upper lateral line and the base of the dorsal fin. Mazarunia species have 26 vertebrae.
- Fin formula : Dorsal XV – XVII / 7–8; Anal III / 7-8.
Systematics
The genus Mazarunia was established in 1990 together with its type species Mazarunia mazarunii on the basis of two type specimens by the Swedish ichthyologist Sven O. Kullander . In 2012 , a team of ichthyologists described two more species. Mazarunia belongs to the Geophagini tribe and is the sister genus of Guianacara .
species
Currently (March 2015) three species are included in the genus Mazarunia :
- Mazarunia charadrica López-Fernández, Taphorn & Liverpool, 2012
- Mazarunia mazarunii Kullander , 1990
- Mazarunia pala López-Fernández, Taphorn & Liverpool, 2012
literature
- Hernán López-Fernández, Donald C. Taphorn; Elford A. Liverpool: Phylogenetic diagnosis and expanded description of the genus Mazarunia Kullander, 1990 (Teleostei: Cichlidae) from the upper Mazaruni river, Guyana, with description of two new species Neotropical Ichthyology, vol.10 no.3 Porto Alegre Sept. 2012 , doi: 10.1590 / S1679-62252012000300001 , ISSN 1679-6225
Web links
- Mazarunia on Fishbase.org (English)