// Workers AI · dad joke modeWhat did Metynnis say? "I'm a sucker for friends
| Metynnis | |
|---|---|
 | |
| Metynnis hypsauchen | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Characiformes |
| Family: | Serrasalmidae |
| Subfamily: | Serrasalminae |
| Genus: | Metynnis Cope, 1878 |
| Type species | |
| Metynnis luna Cope, 1878 | |
| Synonyms[1] | |
| |
Metynnis also commonly known as the silver dollar is a genus of freshwater ray-finned fishes belonging to the family Serrasalmidae, which includes the pacus, piranhas and related fishes. The fishes in this genus are found in tropical and subtropical South America.[2] 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.[3] They generally reach 8–15 cm (3–6 in) in standard length,[3] although a few species may reach up to 18 cm (7 in).[2] The genus contains many of the species known as silver dollars in the aquarium trade.
Though part of the subfamily Serrasalminae, members of this genus are not commonly called piranhas, due to their largely herbivorous diets.[4]
Species
[edit]These are the currently recognized species in this genus:[5]
- Metynnis altidorsalis Ahl 1924
- Metynnis anisurus Ahl, 1924
- Metynnis argenteus Ahl, 1924
- Metynnis cuiaba Pavanelli, Ota & Petry, 2009
- Metynnis fasciatus Ahl, 1931
- Metynnis guaporensis C. H. Eigenmann, 1915
- Metynnis hypsauchen (Müller & Troschel, 1844)
- Metynnis lippincottianus (Cope, 1870)
- Metynnis longipinnis Zarske & Géry, 2008
- Metynnis luna Cope, 1878
- Metynnis maculatus (Kner, 1858)
- Metynnis melanogrammus Ota, Rapp Py-Daniel & Jégu, 2016
- Metynnis mola Eigenmann & Kennedy, 1903
- Metynnis orinocensis (Steindachner, 1908)
- Metynnis otuquensis Ahl, 1924
- Metynnis polystictus Zarske & Géry, 2008
References
[edit]- ↑ Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Genera in the family Serrasalminae". Catalog of Fishes. California Academy of Sciences. Retrieved 19 July 2025.
- 1 2 Froese, Rainer; Pauly, Daniel (eds.). "Species in genus Metynnis". FishBase. May 2017 version.
- 1 2 van der Sleen, P.; J.S. Albert, eds. (2017). Field Guide to the Fishes of the Amazon, Orinoco, and Guianas. Princeton University Press. p. 183-184. ISBN 978-0691170749.
- ↑ Kolmann, M A; Hughes, L C; Hernandez, L P; Arcila, D; Betancur-R, R; Sabaj, M H; López-Fernández, H; Ortí, G (2021-05-01). "Phylogenomics of Piranhas and Pacus (Serrasalmidae) Uncovers How Dietary Convergence and Parallelism Obfuscate Traditional Morphological Taxonomy". Systematic Biology. 70 (3): 576–592. doi:10.1093/sysbio/syaa065. ISSN 1063-5157.
- ↑ Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Metynnis". Catalog of Fishes. California Academy of Sciences. Retrieved 19 July 2025.
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