Tetragonopterus
| Tetragonopterus | ||||||||||||
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Tetragonopterus argenteus |
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| Systematics | ||||||||||||
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| Scientific name of the subfamily | ||||||||||||
| Tetragonopterinae | ||||||||||||
| Gill , 1858 | ||||||||||||
| Scientific name of the genus | ||||||||||||
| Tetragonopterus | ||||||||||||
| Cuvier , 1816 |
Tetragonopterus is a genus of freshwater fish from the family of the true tetras (Characidae). The genus occurs with 14 species in almost all of South America (not west of the Andes and south of the catchment area of the Río Paraná ). Two species are widespread, one only occurs in the Corantijn in Suriname .
features
Tetragonopterus have a short, tall body that is strongly flattened on the sides. They are eleven to twelve centimeters long. The tooth-bearing intermaxillary bone (premaxillary) in the upper jaw is covered with an outer row of small uniform teeth and an inner row of multi-pointed teeth. The front part of the maxillaries is also dentate. The sideline begins behind the head at the level of the upper gill cover , then drops quickly in a curve and then runs below the body center line in an arc to the tail fin stalk.
Systematics
Tetragonopterus belongs to the family of the real tetra and is the only remaining genus of the once generic subfamily Tetragonopterinae.
species
- Tetragonopterus anostomus Silva & Benine, 2011
- Tetragonopterus araguaiensis Silva, Melo, Oliveira & Benin, 2013
- Tetragonopterus argenteus Cuvier, 1816
- Tetragonopterus carvalhoi Melo, Benine, Mariguela & Oliveira, 2011
- Schiller tetra ( Tetragonopterus chalceus ) Spix & Agassiz, 1829
- Tetragonopterus daguae (Eigenmann, 1913) (in Astyanax until April 2020)
- Tetragonopterus denticulatus Silva, Melo, Oliveira & Benin, 2013
- Tetragonopterus georgiae (Géry, 1965)
- Tetragonopterus franciscoensis Silva et al., 2016
- Tetragonopterus juruena Silva et al., 2016
- Tetragonopterus kuluene Silva et al., 2016
- Tetragonopterus manaos Urbanski et al., 2018
- Tetragonopterus ommatus Silva et al., 2016
- Tetragonopterus rarus (Zarske, Géry & Isbrücker, 2004)
literature
- Silva, GSC, Melo, BF, Oliveira, C. & Benine, RC (2016): Revision of the South American genus Tetragonopterus Cuvier, 1816 (Teleostei: Characidae) with description of four new species. Zootaxa , 4200 (1): 1-46. DOI: 10.11646 / zootaxa.4200.1.1
- Günther Sterba : The world's freshwater fish. 2nd Edition. Urania, Leipzig / Jena / Berlin 1990, ISBN 3-332-00109-4 .
Individual evidence
- ↑ Terán, GE, Benitez, MF & Mirande, JM (2020): Opening the Trojan horse: phylogeny of Astyanax , two new genera and resurrection of Psalidodon (Teleostei: Characidae). Zoological Journal of the Linnean Society: zlaa019. April 2020. doi: 10.1093 / zoolinnean / zlaa019
Web links
- Tetragonopterus on Fishbase.org (English)