Slender fish

Slender fish
Kneria angolensis from Brehms Tierleben Volume 8. Third edition. (1892)
Systematics
Overcohort : Clupeocephala Cohort : Otomorpha Sub-cohort : Ostariophysi Anotophysa Order : Sandfish (Gonorynchiformes) Family : Slender fish
Scientific name
Kneriidae
Günther , 1868

The family of slender fish (Kneriidae) comprises five genera and 31 species (including the African mudfish ( Phractolaemus ansorgii )). It belongs to the order of the sandfish-like (Gonorynchiformes) and occurs mainly in the tropical areas of Africa south of the equator , as well as in the Nile , Benue , Volta and Dja .

features

Slender fish have an elongated, spindle-shaped shape and are 2 to 19 centimeters long. Your mouth is more or less subordinate , the upper jaw protractile (extendable). Kneria and Parakneria have cycloid scales and a lateral line organ , while the neotene Cromeria and Grasseichthys are transparent and flaky and also have no lateral line organ.

Internal system

• Subfamily Phractolaeminae
  • African mudfish ( Phractolaemus ansorgii )
• Subfamily Kneriinae
  • Genus ear fish ( Kneria )
  • Genus Parakneria
  • Cromeriini tribe
    • Genus Cromeria
    • Genus Grasseichthys
      • Grasseichthys gabonensis

literature

• Joseph S. Nelson : Fishes of the World. John Wiley & Sons, 2006, ISBN 0-471-25031-7 .

Individual evidence

1. ↑ ^{a b} Thomas J. Near, Alex Dornburga, Matt Friedman: Phylogenetic relationships and timing of diversification in gonorynchiform fishes inferred using nuclear gene DNA sequences (Teleostei: Ostariophysi). Molecular Phylogenetics and Evolution, DOI: 0.1016 / j.ympev.2014.07.013

Web links

Commons : Kneriidae  - collection of images, videos and audio files

• Slender fish on Fishbase.org (English)