Species Profile
Silver Dollar
Metynnis argenteus
Characinspeaceful
Adult size
6″
Minimum tank
75 gal
Temperature
72–82°F
pH
5–7
Schooling
Group of 5+
Water level
mid
Diet
Flake, pellets, veggie, blanched greens
Notes
Big peaceful schooling characin shaped like a coin. Will mow down soft plants; pair only with anubias, java fern, or artificial decor. Group of 5+ in 75gal+ for proper schooling behavior. Skittish; needs a calm tank.
Compatible Tankmates
Best tank mates for Silver Dollar
Every species below passes the compatibility engine when paired with Silver Dollarin a suitably sized tank. Verdicts come from the same rules the builder uses — click a card to see that species' own care profile and its tank mates in turn.
Cardinal Tetra
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Rummynose Tetra
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Harlequin Rasbora
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Zebra Danio
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Fancy Guppy
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Platy
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Swordtail
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Male Betta
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Dwarf Gourami
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Honey Gourami
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Pearl Gourami
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
German Blue Ram
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Photo: Brian Gratwicke / Wikimedia Commons · Source · CC-BY-2.0