Biology:Metynnis

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Short description: Genus of fishes

Metynnis
Metynnis hypsauchen small.jpg
Metynnis hypsauchen
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Characiformes
Family: Serrasalmidae
Genus: Metynnis
Cope, 1878
Type species
Metynnis luna
Cope, 1878

Metynnis is a genus of serrasalmid fish from tropical and subtropical South America.[1] They are herbivorous or omnivorous, and inhabit a wide range of freshwater habitats, ranging from rivers and streams (both fast- and slow-flowing), to floodplains, flooded forests, lakes, pools and reservoirs.[2] They generally reach 8–15 cm (3–6 in) in standard length,[2] although a few species may reach up to 18 cm (7 in).[1] The genus contains many of the species known as silver dollars in the aquarium trade.

Species

There are currently 15 recognized species in this genus:[1]

  • Metynnis altidorsalis C. G. E. Ahl, 1923
  • Metynnis argenteus C. G. E. Ahl, 1923 (silver dollar)
  • Metynnis cuiaba Pavanelli, Ota & Petry, 2009
  • Metynnis fasciatus C. G. E. Ahl, 1931
  • Metynnis guaporensis C. H. Eigenmann, 1915
  • Metynnis hypsauchen (J. P. Müller & Troschel, 1844) (silver dollar)
  • Metynnis lippincottianus (Cope, 1870) (spotted silver dollar)
  • Metynnis longipinnis Zarske & Géry, 2008 (silver dollar)
  • Metynnis luna Cope, 1878
  • Metynnis maculatus (Kner, 1858) (spotted metynnis)
  • Metynnis melanogrammus Ota, Rapp Py-Daniel & Jégu, 2016[3]
  • Metynnis mola C. H. Eigenmann & C. H. Kennedy, 1903
  • Metynnis orinocensis (Steindachner, 1908)
  • Metynnis otuquensis C. G. E. Ahl, 1923
  • Metynnis polystictus Zarske & Géry, 2008 (silver dollar)

References

  1. 1.0 1.1 1.2 Froese, Rainer and Pauly, Daniel, eds. (2017). Species of Metynnis in FishBase. May 2017 version.
  2. 2.0 2.1 van der Sleen, P., ed (2017). Field Guide to the Fishes of the Amazon, Orinoco, and Guianas. Princeton University Press. p. 183-184. ISBN 978-0691170749. 
  3. Ota, R.P., Rapp Py-Daniel, L.H. & Jégu, M. (2016): A new Silver Dollar species of Metynnis Cope, 1878 (Characiformes: Serrasalmidae) from Northwestern Brazil and Southern Venezuela. Neotropical Ichthyology, 14 (4): e160023.

Wikidata ☰ Q145337 entry