Astatotilapia swynnertoni
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Astatotilapia swynnertoni |
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| Astatotilapia swynnertoni | ||||||||||||
| ( Boulenger , 1907) |
Astatotilapia swynnertoni is a species of cichlid found in the lower Pungwe , Búzi and Save in eastern Zimbabwe and central Mozambique .
features
Astatotilapia swynnertoni becomes 9.5 cm long; the head takes up a third of the total length. The body height is around 40% of the total length. The fish are dark brown and olive in color and show some indistinct dark crossbars on the sides of the body. A blackish stripe runs from the eye to a black spot on the gill cover. The fins are gray. Males have two or three round egg spots in the anal fin. There are three or four rows of scales on the cheeks and relatively large scales on the gill cover. The lips are relatively thick. In the jaws there are larger, three-pointed teeth in an outer row and small, two-pointed teeth in three inner rows. Eight short gill rakes sit on the lower section of the first gill arch . The pectoral fins reach about three-quarters of the length of the head and do not reach the base of the anal fin. The pelvic fins reach up to then or a little beyond. The caudal fin is rounded.
- Fin formula : dorsal XV / 9–10, anal III / 8–9.
- Dandruff formula : SL 20–22 / 10–11.
Systematics
The fish species was described in 1907 by the Belgian-British ichthyologist George Albert Boulenger under the name Tilapia swynnertoni and named in honor of Charles Francis Massy Swynnerton , a British naturalist who lived and researched in what was then southern Rhodesia . The species was later assigned to the genus Astatotilapia , which is not a Monophylum . Together with its sister species Astatotilapia calliptera and Astatotilapia tweddlei , Astatotilapia swynnertoni belongs to the "Lake Malawi radiation" of the East African cichlids, so it is closely related to the colorful mbunas , which are known as aquarium fish.
Individual evidence
- ^ George Albert Boulenger (1907): Description of a new cichlid fish from Portuguese East Africa . Annals and Magazine of Natural History (Series 7), 20 (115): 50.
- ↑ 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 156 a. 158 in the supplement .
Web links
- Astatotilapia swynnertoni on Fishbase.org (English)