Description
Scientific Name: Metynnis maculatus
Common Name: Spotted Metynnis – Silver Dollar
Adult Size: 6 inches (15 cm)
Life Expectancy: 10 years (with proper care)
Habitat: Slow-moving rivers and floodplain lakes in South America, particularly in the Amazon and Orinoco basins. They inhabit areas with dense vegetation.
Minimum Tank Size: 75 gallons (for a small group; they are schooling fish)
Ideal Temperature: 75–82°F (24–28°C)
pH Range: 5.5–7.5
Water Hardness: 4–18 dGH
Temperament: Peaceful, schooling fish; best kept in groups of 5 or more. May nip fins if kept alone or with long-finned species.
Omnivorous:
Prefers a plant-based diet; enjoys blanched vegetables (spinach, lettuce, zucchini), spirulina flakes, and algae wafers. Will also accept high-quality flakes, pellets, and occasional protein sources like bloodworms or brine shrimp.
