Metynnis argenteus
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Metynnis argenteus is a species of freshwater ray-finned fishes belonging to the family Serrasalmidae, which includes the pacus, piranhas and related fishes. This fish is endemic to the Tapajós River
Silver dollar Metynnis argenteus
A large school of M. argenteus
Silver dollar (fish)
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Silver dollar is a common name given to a number of species of fishes, mostly in the genus Metynnis, tropical fish belonging to the family Serrasalmidae which are closely related to piranha and pacu.
Metynnis argenteus
…piranhas and related fishes. This fish is endemic to the Tapajós River Basin in Brazil. It is one of the species known in the aquarium trade as the "silver dollar". M. argenteus is generally considered the archetypal silver dollar, although it and the very similar M. hypsauchen frequently have been confused…
An 1865 watercolor painting of a silver dollar by Jacques Burkhardt.