Spotted Silver Dollar (Metynnis maculatus)
The Spotted Silver Dollar (Metynnis maculatus) is a beautiful freshwater schooling fish known for its metallic silver body accented by distinctive black spots. This peaceful species is highly prized by aquarists looking for a Silver Dollar with unique markings and active schooling behavior.
Spotted Silver Dollars are excellent additions to large community aquariums and thrive when kept in groups.
Quick Facts
- Scientific Name: Metynnis maculatus
- Common Name: Spotted Silver Dollar
- Adult Size: 6–8 inches
- Temperament: Peaceful
- Tank Size: 75 gallons minimum
- Temperature: 75–82°F
- pH: 6.0–7.5
- Diet: Omnivore
- Schooling Fish: Yes
Why Choose Spotted Silver Dollars?
✔ Distinctive spotted pattern
✔ Peaceful schooling fish
✔ Active and entertaining swimmers
✔ Excellent for large aquariums
✔ Unique alternative to standard Silver Dollars
Aquarium Setup
Spotted Silver Dollars are active, large-growing schooling fish that need plenty of open swimming space and a securely covered tank, as they can be skittish and may jump when startled. A spacious aquarium with strong filtration keeps these big-bodied fish healthy.
Recommended setup:
- 75+ gallon aquarium (larger for groups)
- Open swimming areas with subdued lighting
- Driftwood, smooth rocks, and hardy or artificial plants (they nibble soft live plants)
- Strong filtration and regular water changes
- Soft, slightly acidic to neutral water
Diet & Feeding
Spotted Silver Dollars are primarily herbivorous omnivores with a strong appetite for plant matter. A varied, vegetable-rich diet keeps their color bright and their digestion healthy.
- High-quality vegetable flakes and pellets
- Blanched vegetables such as zucchini, spinach, and peas
- Spirulina and algae-based foods
- Occasional protein treats like bloodworms or brine shrimp
Tank Mates
Peaceful despite their size, Spotted Silver Dollars do best with other large, even-tempered community fish. Good companions include:
- Other Silver Dollars
- Bala Sharks
- Tinfoil Barbs
- Severums and other peaceful South American cichlids
- Large Plecos
- Larger Rainbowfish
Avoid:
- Small tetras and nano fish (may be intimidated)
- Aggressive or fin-nipping species
- Delicate live-planted aquascapes (they will graze on soft plants)
Schooling Behavior
Spotted Silver Dollars are happiest in groups of five or more. Kept in a proper school they are calmer, bolder, and display their natural shimmering, synchronized swimming. Single or small numbers of fish tend to be shy and stressed.
Frequently Asked Questions
How big do Spotted Silver Dollars get?
They typically reach about 6 to 8 inches as adults, so they need a spacious tank of at least 75 gallons.
How many Spotted Silver Dollars should I keep together?
Keep them in a school of at least five. Larger groups reduce stress and bring out their best, most active behavior.
Are Spotted Silver Dollars peaceful?
Yes. They are gentle, peaceful schooling fish that get along well with other large, non-aggressive community species.
Will Spotted Silver Dollars eat my plants?
Likely yes. They are avid plant grazers, so hardy, tough-leaved plants or artificial plants are recommended.
What do Spotted Silver Dollars eat?
A vegetable-forward omnivore diet: veggie flakes/pellets, blanched greens, spirulina, and occasional protein treats.
Available at Tropical Treasures Wyo
Healthy Spotted Silver Dollars available for large freshwater aquariums and community fish displays.
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