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 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 Tankmates for the Silver Dollar fish species

Create a test community that includes the Silver Dollar fish species and other types you'd like to introduce - Assess tank size suitability based on filter type and volume, possible negative interactions and warnings.

Please check your water type for compatibility with your fish, which can be found on the Silver Dollar information box.
Tank Details
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* Recent changes to stocking & filter advice October 2018
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If you'd like to talk about the "Silver Dollar" with our users, then we have a buzzing community of fish enthusiasts where you can talk about tank issues, Silver Dollar fish behaviour, Silver Dollar tank stocking and any other issues related to the Silver Dollar fish or other types you may have.

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