Coptodon tholloni
| Coptodon tholloni | ||||||||||||
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Coptodon tholloni |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Coptodon tholloni | ||||||||||||
| ( Sauvage , 1884) |
Coptodon tholloni ( Syn . : Tilapia tholloni ) is a species of fish from the family of cichlids (Cichlidae) that occurs in Gabon and the Republic of the Congo in the rivers Ogooué , Kouilou and Chiloango , as well as in the lower Congo and in the Malebo Pool .
features
Coptodon tholloni can reach a length of 22 to 30 cm, the head occupies 32.3 to 35% of the standard length . The body is oval, the front profile can be slightly indented. The eyes are relatively large. The mouth is big. The jaws are covered with two to four rows of teeth. The teeth of the outer row are narrow and two-pointed. On the lower branch of the first gill arch there are 9 to 10 gill rakes . The lower pharyngealia has pointed, curved and straight three-pointed teeth in the back. Your ventral keel is shorter than the dentate area.
The fish have a dark brown back, greenish to yellowish white body sides and a whitish belly. The scales on the sides of the body have a black spot at their base. Seven vertical cross bars, forked in a Y-shape at the top and narrowing at the bottom, are crossed by a horizontal strip. At the points of intersection they form a series of larger spots. The throat, breast and belly of the fry are whitish and become reddish when they reach sexual maturity. The pectoral fins are transparent, the pelvic fins have a black front edge. The anal fin is very dark to blackish, sometimes with a reddish tinge. The dorsal fin is gray, with a tilapia spot and a few light spots. The caudal fin is dark with numerous spots on the rear edge.
- Fin formula : dorsal XV – XVI / 9–11, anal III / 7–9.
- Scale formula : SL 27–29.
Way of life
Coptodon tholloni is likely to be less vegetarian than other Coptodon species. Like all Coptodon species, Coptodon tholloni is a substrate breeder. Spawning takes place in caves, on flat stones or in pits in the sand.
Individual evidence
- ↑ a b Melanie Stiassny, Guy Teugels & Carl D. Hopkins: The Fresh and Brackish Water Fishes of Lower Guinea, West-Central Africa, Volume 2 , ISBN 978-9074752213 , page 365 u. 367.
- ↑ a b c Anton Lamboj: The cichlids of western Africa. Publisher: Natur und Tier, 2006, ISBN 386-659000-8 , pages 89-90.
- ↑ Coptodon tholloni on Fishbase.org (English)