Enteromius anoplus

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Enteromius anoplus
Barbus anoplus.jpg

Enteromius anoplus

Systematics
without rank: Otophysa
Order : Carp-like (Cypriniformes)
Subordination : Carp fish-like (Cyprinoidei)
Family : Carp fish (Cyprinidae)
Genre : Enteromius
Type : Enteromius anoplus
Scientific name
Enteromius anoplus
( Weber , 1897)

Enteromius anoplus ( Syn .: Barbus anoplus ) is a small species of barbels found in southern Africa. The distribution area extends from Limpopo in the east via KwaZulu-Natal , the Eastern Cape Provinceto the Upper and Middle Orange and the rivers of the Cape area ( Olifants River , Gouritz River , Gamtoos River , Sundays River and Great Fish River ). But it is absent in the mountain streams and rivers of the Cape Fold Belt .

features

Enteromius anoplus males reach a maximum length of 10 cm, females become slightly larger with 12 cm. The head is rounded, the body slender. There is usually a pair of short barbels on the little mouth . The scales have numerous radial stripes. Out of breeding season females and males are gray-green, with males sometimes showing a dark vertical stripe on the sides of the body. Reproductive males show a bright golden brood color.

Way of life

Enteromius anoplus prefers cooler temperatures and occurs in small swarms in streams, rivers and lakes, mostly between fallen leaves, branches that have fallen into the water or not too dense aquatic plants. It feeds on insects, zooplankton, seeds, green algae and diatoms . The breeding season is in the southern summer when the rivers carry a lot of water after the rainy season. The eggs stick to aquatic plants after spawning. The larvae hatch after three days and begin swimming freely after six or seven days. After a year, the fish become sexually mature. Males only live two years, females live to be three or possibly four years old.

Systematics

Enteromius anoplus in 1897 by the German-Dutch zoologist Max Wilhelm Carl Weber described as Barbus Anoplus described. As it belonged to the group of small, diploid African barbus species, it was placed in the genus Enteromius , which was revalidated for these fish, at the beginning of 2015 . With 5 to 6 described and some previously undescribed species that also prefer cooler waters, it forms the so-called Chubbyhead group within this group.

literature

Individual evidence

  1. ↑ Lei Yanga, Tetsuya Sado, M. Vincent Hirt, Emmanuel Pasco-Viel, M. Arunachalam, Junbing Li, Xuzhen Wang, Jörg Freyhof, Kenji Saitoh, Andrew M. Simons, Masaki Miya, Shunping He, Richard L. Mayden (2015 ): Phylogeny and Polyploidy: Resolving the Classification of Cyprinine Fishes (Teleostei: Cypriniformes). Molecular Phylogenetics and Evolution, February 2015, doi: 10.1016 / j.ympev.2015.01.014
  2. ↑ Enteromius anoplus in the Catalog of Fishes (English)
  3. ^ H. van der Bank, J. Engelbrecht: Genetic relationships between seven species within the chubbyhead and goldie barb groups of minnows (Pisces, Cyprinidae). Abstract

Web links

Commons : Barbus anoplus  - collection of images, videos and audio files