Silver Dollar Tropical Fish Information

Metynnis argenteus
Silver Dollar
Behaviour Peaceful, shoaling, plant-eater
Typical size 12cm
Max size 15cm
Tank Area Middle
Min Tank Size 120cm
Min Number in Tank 4
Temp Min: 24℃ Max: 28℃
Feeding Flake, frozen, live foods. Vegetable matter should be included
pH Range 6-8
Hardness vs,s,m,h
Silver Dollar Metynnis argenteus
  • Silver Dollar Metynnis argenteus - thumbnail
  • Silver Dollar Metynnis argenteus - thumbnail

Silver Dollar (Metynnis argenteus)

Silver Dollar Tropical Fish Learn all about the Silver Dollar's feeding habits and food types, its behaviour, its origins, its natural habitats, is it male or female, breeding advice and information, suitable tank mates, its sizing and growth range, minimum tank size, water PH and more. Use our fish community creator tool to plan your tank set up and ensure that the Silver Dollar is the right fish for your aquarium.

The Silver Dollar is closely related to the Piranha but is almost exclusively vegetarian. Silver Dollars can exhibit quite a nervous and timid nature, especially when young, so they must be kept in an aquarium where they are unlikely to be unduly frightened by outside events. The round body of the Silver Dollar gives it a strong presence in the aquarium and a group will make excellent tank mates for other large peaceful fish and even some larger cichlids. Although they will adapt to harder water, they will do best in soft to medium conditions. Provide hiding spots amongst large roots and include plant material in their diet.

Silver Dollar Facts

Family Characidae (Characins) | Synonyms Metynnis anisurus, M. dungerni, M. eigenmanni, M. heinrothi, M. smethlageae | Origin South America; Tapajos River basin | Breeding Egg scatterer, soft water required | Natural Water Conditions pH 5-7, medium | Natural Habitat Heavily vegetated waters | Sexing Males have a redder enlarged anal fin

Silver Dollar Help and Advice

If you have a question about keeping Silver Dollar's then please use our Silver Dollar help forum. Join 100's of other fish enthusiasts with 1000's of years experience between them caring for and keeping fish like these.

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Check tank mates for the Silver Dollar fish species

You are in the thinkfish community creator for the Silver Dollar fish species, you can learn all about how the tool works in assessing fish tank mate compatibility at the link provided or use the tool tips provided to guide you. Create a test fish community that includes the Silver Dollar species and any other types of fish or crustacean you'd like to introduce - You can assess the best companions, tank size suitability, stocking levels based on filter type and volume and possible negative interactions and warnings as you build up your aquarium.

Please do check your water type for compatibility with your fish, which can be found on the Silver Dollar information box above and your local water company providers website. Don't waste your money and endanger your fish!
Tank Details
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* Recent changes to stocking & filter advice October 2018
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question mark  Max Stocking level: 0cm
0-1 months 20%: 0cm
1-3 months 40%: 0cm
3-6 months 60%: 0cm
question mark  Current stock level: 0cm
Stock percentage: 0%
question mark  Suggested maximum
fish size for your tank:
My Fishtank Quantity Stock cm

There are currently no fish in your fish tank. To add fish, you can click the 'Add the Silver Dollar to your tank' button. Or search for a different fish using the options presented above

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See an example tank as it would show on a user profile with enabled settings and community tanks.

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