Cheilobarbus
| Cheilobarbus | ||||||||||||
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Cheilobarbus capensis |
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| Scientific name | ||||||||||||
| Cheilobarbus | ||||||||||||
| Smith , 1841 |
Cheilobarbus is a species of poor species from the South African genus of the carp familyCyprinidae. It occurs in some of therivers that havetheir source in the Amathole Mountains ( Keiskamma River and Buffalo River ) in the Eastern Cape Province.
features
Cheilobarbus species are medium-sized carp fish with standard lengths of 50 to 60 cm. The scales are structured radially . The snout is elongated due to the elongated lacrimal . The mouth is below, has firm, well-developed lips and is covered with one or two pairs of barbels. The pharyngealia are covered with three rows of cusp-shaped pharyngeal teeth . The intestine is tortuous and longer than the standard length of the fish. Adult fish of both sexes show a slight spawning rash on the top of the head and a single row above the pectoral fins during spawning . The dorsal fin stands above or a little behind the pelvic fins. Your last simple fin ray is slightly or clearly serrated at the rear edge. Behind it are eight branched fin rays. The anal fin has three unbranched and five or six branched rays.
Cheilobarbus is the only genus of large South African carp fish with a tetraploid set of chromosomes . In addition, the unbranched dorsal fin rays of most of the other genera are smooth and not serrated, and the grooves on their scales are parallel and not radial.
Way of life
Both Cheilobarbus species occur in larger rivers and prefer the deeper areas as adult fish. They feed mainly on bottom-dwelling invertebrates and on algae. Cheilobarbus species reproduce in summer and form large groups for spawning that spawn together over stony ground.
Systematics
Cheilobarbus was introduced in 1841 by the British zoologist Andrew Smith as a subgenus of Barbus with Barbus (Cheilobarbus) capensis as the type species and Barbus (Cheilobarbus) marequensis as the only other species in the genus. The name Cheilobarbus refers to the strong lips of the fish ( Gr .: 'cheilos' = rank, lip). Both species were later assigned to the genus Labeobarbus and Barbus capensis came to Pseudobarbus in 2016 while Barbus marequensis remained in Labeobarbus to this day . At the beginning of 2018 the Cheilobarbus became an independent genus with the two species Cheilobarbus capensis and Cheilobarbus serra , as both differ from all other South African carp fish by their tetraploid chromosome set. Within the family of carp fish (Cyprinidae) Cheilobarbus belongs to the subfamily Cyprininae and to the tribe Smiliogastrini.
species
- Cheilobarbus capensis Smith, 1841
- Cheilobarbus serra (Peters, 1864)
supporting documents
- ↑ a b c d Skelton, PH, Swartz, E. & Vreven, EJ (2018): The identity of Barbus capensis Smith, 1841 and the generic status of southern African tetraploid cyprinids (Teleostei, Cyprinidae). European Journal of Taxonomy, 410: 1-29.
- ↑ Cheilobarbus capensis on Fishbase.org (English)
- ↑ Cheilobarbus serra on Fishbase.org (English)
- ^ Vreven, EJ, T. Musschoot, J. Snoeks and UK Schliewen (2016): The African hexaploid Torini (Cypriniformes: Cyprinidae): review of a tumultuous history. Zoological Journal of the Linnean Society v. 177 (no. 2): 231-305.