Metynnis argenteus

A silver, disc-shaped fish resembling hypsauchen. The latter's black spot above and behind the eye offers a comparison clue; the trade name silver dollar alone does not identify a species.

Adult length: Up to 15 cm (standard length, without the tail fin)
Water temperature: 24–28 °C
pH: 6–7

Group and space figures are recommendations from the cited source, not a guarantee of stocking capacity. Maximum length is not treated as typical adult total length.

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Same-species behaviour

The source recommends at least 5 fish and a 180 × 38 cm footprint as a reference for an adult group. Small fish may be eaten and live plants are easily damaged.

Diet and feeding

Provide plenty of plant-based foods and suitably sized formulated foods, supplemented with small live or frozen foods.

Sources