Silver Dollar

Metynnis argenteus

Silver Dollar is a peaceful middle-to-top swimmer. Keep in a school of 5+.

PeacefulMiddle to top swimmerKeep in a school of 5+Intermediate

Save this fish or add it directly to one of your aquariums.

Quick facts

Adult size
≤ 15 cm (≤ 5.9 in)
Aquarium size
265 L or larger / ≥ 180 cm (≥ 70.9 in) minimum length
Care level
Intermediate
Temperament
Peaceful
Swimming zone
Middle to top swimmer
Temperature
24–28 °C
pH
6–7.5
GH
5–15 dGH
Diet
Omnivore
Lifespan
up to 10 years
Group behavior
Keep in a school of 5+

Care requirements

Care level: Intermediate.

Lifespan: up to 10 years.

Aquarium size and space needs

Minimum aquarium size: 265 L or larger / ≥ 180 cm (≥ 70.9 in) minimum length. Plan the layout and stocking within that limit.

Water parameters

Suitable water: temperature 24–28 °C, pH 6–7.5, GH 5–15 dGH.

Temperament and compatibility

Silver Dollar is peaceful and suits calm community fish.

Keep in a school of 5+.

Swimming zone and behavior

This fish uses the middle to upper part of the aquarium, so leave enough open swimming space for movement and feeding. Keep in a school of 5+.

Feeding

As an omnivore, Silver Dollar should receive a varied diet rather than one repeated food type.

Natural habitat and origin

Origin: Guyana, Paraguay, Brazil.

Before adding this fish

  • Plan for an aquarium of 265 L or larger / ≥ 180 cm (≥ 70.9 in) minimum length.
  • Make room for its social group.
  • Avoid aggressive or highly competitive fish.
  • Keep in a school of 5+.
  • Offer a varied diet that matches this species.

Similar fish profiles

Use these profiles to compare fish with similar care level, size, temperature range, or swimming behavior.

Blackberry Silver Dollar Myloplus schomburgkii Same family Similar care level Same temperament Intermediate ≤ 40 cm (≤ 15.7 in) 23–27 °C African Moon Tetra Bathyaethiops caudomaculatus Similar care level Same temperament Same swimming zone Beginner – Intermediate ≤ 8 cm (≤ 3.1 in) 22–25 °C Ajamaru Rainbowfish Melanotaenia ajamaruensis Similar care level Same temperament Same swimming zone Beginner – Intermediate ≤ 10 cm (≤ 3.9 in) 27–30 °C Barred Danio Devario pathirana Similar care level Same temperament Same swimming zone Beginner – Intermediate ≤ 8 cm (≤ 3.1 in) 20–26 °C Blue Moon Danio Devario xyrops Similar care level Same temperament Same swimming zone Beginner – Intermediate ≤ 8 cm (≤ 3.1 in) 18–26 °C Apollo’s Leporinus Leporinus apollo Similar care level Same temperament Bottom dweller Intermediate – Advanced ≤ 15 cm (≤ 5.9 in) 20–27 °C

FAQ

How large does Silver Dollar get?

Silver Dollar reaches ≤ 15 cm (≤ 5.9 in).

What aquarium size does Silver Dollar need?

Use an aquarium of at least 265 L or larger / ≥ 180 cm (≥ 70.9 in) minimum length.

Is Silver Dollar peaceful?

Yes. Silver Dollar is recorded as peaceful and is best planned with calm community fish that do not harass it or dominate the feeding area.

What temperature is suitable for Silver Dollar?

Keep it between 24 to 28 °C.

Should Silver Dollar be kept alone or in a group?

Silver Dollar: Keep in a school of 5+.

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