Tetragonopterus is a genus of fish in the family Characidae native to South America.
It is the only member of the subfamily Tetragonopterinae. The subfamily was originally much larger as previously defined, and contained many of the genera known as "Tetra".
Species
There are currently 14 recognized species of this genus:
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Tetragonopterus anostomus G. S. C. Silva & Benine, 2011
[Silva, G.S.C. & Benine, R.C. (2011): A new species of Tetragonopterus Cuvier, 1816 (Characiformes, Characidae, Tetragonopterinae) from the upper rio Araguaia, Central Brazil. Zootaxa, 2911: 50–56.]
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Tetragonopterus araguaiensis G. S. C. Silva, B. F. Melo, C. de Oliveira & Benine, 2013
[Silva, G.S.C., Melo, B.F., Oliveira, C. & Benine, R.C. (2013): Morphological and molecular evidence for two new species of Tetragonopterus (Characiformes: Characidae) from central Brazil. Journal of Fish Biology, 82 (5): 1613-1631.]
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Tetragonopterus argenteus Georges Cuvier, 1816
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Tetragonopterus carvalhoi B. F. Melo, Benine, Mariguela & C. de Oliveira, 2011
[Melo, B.F., Benine, R.C., Mariguela, T.C. & Oliveira, C. (2011): A new species of Tetragonopterus Cuvier, 1816 (Characiformes: Characidae: Tetragonopterinae) from the rio Jari, Amapá, northern Brazil. Neotropical Ichthyology, 9 (1): 49-56.]
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Tetragonopterus chalceus Agassiz, 1829
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Tetragonopterus daguae Eigenmann, 1913
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Tetragonopterus denticulatus G. S. C. Silva, B. F. Melo, C. de Oliveira & Benine, 2013
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Tetragonopterus franciscoensis G. S. C. Silva, B. F. Melo, C. de Oliveira & Benine, 2016
[Silva, G.S.C., Melo, B.F., Oliveira, C. & Benine, R.C. (2016): Revision of the South American genus Tetragonopterus Cuvier, 1816 (Teleostei: Characidae) with description of four new species. Zootaxa, 4200 (1): 1–46.]
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Tetragonopterus georgiae (Géry, 1965)
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Tetragonopterus juruena G. S. C. Silva, B. F. Melo, C. de Oliveira & Benine, 2016
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Tetragonopterus kuluene G. S. C. Silva, B. F. Melo, C. de Oliveira & Benine, 2016
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Tetragonopterus manaos Urbanski, Melo, Silva & Benine, 2018
[Urbanski, B.Q., Melo, B.F., Silva, G.S.C. & Benine, R.C. (2018): A new species of Tetragonopterus (Characiformes: Characidae) from Central Amazon lowlands, Brazil. Neotropical Ichthyology, 16 (2).]
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Tetragonopterus ommatus G. S. C. Silva, B. F. Melo, C. de Oliveira & Benine, 2016
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Tetragonopterus rarus (Axel Zarske, Géry & Isbrücker, 2004)
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Tetragonopterus signatus
