Metynnis hypsauchen is a species of serrasalmid found in Amazon and Paraguay river basins, as well as rivers of the Guiana Shield.

[1] It is one of the fish known as the "silver dollar" in the aquarium trade.

It has frequently been confused with the very similar M.

[2] It reaches a length of 15 cm (5.9 in).

This Characiformes-related article is a stub.