Silver Dollar (Metynnis spp.)

Silver Dollar (Metynnis spp.) - Peaceful Schooling Characin for Larger Aquariums

The Silver Dollar (Metynnis spp.) is a disc-shaped, silver-flanked characin named for its striking resemblance to a shimmering coin. Closely related to piranhas but entirely peaceful, it's an active schooling fish that looks its best moving as a group through open water.

Silver Dollars are hardy, easygoing fish that do best in a group of five or more, where their natural schooling instinct keeps them confident and reduces skittishness. They are strong swimmers that appreciate a long tank with open space to move.

At N8 Aquatics, our fish are carefully raised and conditioned to ensure healthy stock suited to home aquariums.

Species Snapshot

• Size Sold: Juvenile, approx. 4–6 cm
• Adult Size: 12–15 cm
• Tank Size: 200 L minimum, kept in a group of 5+
• Temperament: Peaceful, active schooling characin
• Temperature: 24–28°C
• pH: 5.5–7.5
• Difficulty: Easy

Ideal Habitat and Care

A large, open-swimming tank with sturdy plastic or hardy plants (soft live plants will be eaten) suits this active schooling characin best.

• Temperature: 24–28°C
• pH: 5.5–7.5
• Water Flow: Moderate to strong, reflecting its active nature
• Maintenance: Standard weekly partial water changes with strong filtration

Diet

A herbivore-leaning omnivore that needs plenty of vegetable matter.

• Blanched zucchini and spinach
• Spirulina-based flake or pellet
• Occasional protein-rich foods

Compatibility

Best kept as a shoal with other robust community fish of a similar size.

Suitable tankmates include:

• Other Silver Dollars (group of 5+)
• Robust, similarly-sized community fish
• Larger, peaceful catfish

Avoid aggressive or fin-nipping species.

Why Buy From N8 Aquatics

• Carefully raised aquarium fish
• Healthy, well-conditioned stock
• Strong genetics and vibrant colouration
• Breeder support if you have questions

Pickup Information

N8 Aquatics currently operates as a local pickup-only breeder in Central Queensland.

Orders are collected by appointment after purchase confirmation.

Please ensure you are able to collect your fish before placing an order.

Important

All livestock sold by N8 Aquatics should be introduced to fully cycled aquariums suitable for the species being kept.

Please ensure your aquarium setup and tankmates are appropriate before purchasing.