Silver Dollar "Metynnis argenteus"

Care Level




Reef Compatible


Plant Safe


Max Size

5" - 8"

Minimum Size

75 gallon


Black, Red, Silver



Water Conditions

Slightly acidic (5.8-7.5 pH), soft water hardness (3-8 dGH), 72 to 80 degrees Fahrenheit

General: The Silver Dollar (Metynnis argenteus) is a schooling fish from Brazilian river systems. It is often best to keep Silver Dollar in schools larger than six, as they will behave most naturally when multiples are present. The Silver Dollar will reach a length of six inches, and should be kept in an aquarium larger than 75 gallons, once mature.

Fecundity: The Silver Dollar (Metynnis argenteus) may produce over 1,000 eggs per clutch. Try to maintain slightly soft (3 to 8 dGH), acidic conditions (6 to 7 pH) in order to encourage reproductive behaviors.

Aquarium Diet (Herbivore): Spirulina, Daphnia, Boiled Vegetative Matter, Brine Shrimp, Blackworms

Preferred Water Chemistry: Slightly acidic (5.8-7.5 pH), soft water hardness (3-8 dGH)

Compatibility: The Silver Dollar (Metynnis argenteus) are typically compatible with Oscar, Severum, Jack Dempsey, Synodontis, and Rainbowfish.