Metynnis is a genus of serrasalmid fish from tropical and subtropical South America. They are herbivorous or omnivorous, and inhabit a wide range of freshwater habitats, ranging from rivers and streams (both fast- and slow-flowing), to , , lakes, pools and reservoirs. They generally reach in standard length,[ although a few species may reach up to .][ The genus contains many of the species known as silver dollars in the aquarium trade.
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Though part of the subfamily Serrasalminae, members of this genus are not commonly called , due to their largely herbivorous diets.
Species
There are currently 15 recognized species in this genus:[
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!Species
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Metynnis altidorsalis
C. G. E. Ahl, 1923 | |
Metynnis argenteus (silver dollar)
C. G. E. Ahl, 1923 | |
Metynnis cuiaba
Pavanelli, Ota & Paulo Petry, 2009 | |
Metynnis fasciatus
C. G. E. Ahl, 1931 | |
Metynnis guaporensis
C. H. Eigenmann, 1915 | |
Metynnis hypsauchen (silver dollar)
(J. P. Müller & Troschel, 1844) | |
Metynnis lippincottianus (spotted silver dollar)
(Cope, 1870) | |
Metynnis longipinnis (silver dollar)
Axel Zarske & Géry, 2008 | |
Metynnis luna
Cope, 1878 | |
Metynnis maculatus (spotted metynnis)
(Rudolf Kner, 1858) | |
Metynnis melanogrammus
Ota, Rapp Py-Daniel & Jégu, 2016[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.] | |
Metynnis mola
C. H. Eigenmann & C. H. Kennedy, 1903 | |
Metynnis orinocensis
(Steindachner, 1908) | |
Metynnis otuquensis
C. G. E. Ahl, 1923 | |
Metynnis polystictus (silver dollar)
Axel Zarske & Géry, 2008 | |