Metynnis is a genus of serrasalmids from tropical and subtropical South America. It contains many of the species known as silver dollars in the aquarium trade.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0