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Silver Dollar (Metynnis argenteus)
Silver Dollar
Please Note: Due to variations within species, your item may not look identical to the image provided. Approximate size range may also vary between individual specimen.
Please Note: Due to variations within species, your item may not look identical to the image provided. Approximate size range may also vary between individual specimen.
Silver Dollar (Metynnis argenteus)


The round shape and silver color of its body lend the Silver Dollar a very appropriate name. With a maximum size of 6", they are perfect for the larger community aquarium. This hardy characin will be a great choice for the beginner to the expert aquarist.

A tank of at least 30 gallons will be the ideal environment for this characin. Silver Dollars are a lively schooling fish and best kept in groups of three or more. Rocks, plants, and driftwood help mirror its natural habitat and will help to reduce stress on the fish, though plastic plants may be necessary due to their herbivorous nature. They do best in soft, slightly acidic water with high filtration.

The Silver Dollar will breed occasionally in an aquarium setting and a hospital or "breeding tank" with clumps of floating plants to spawn between will be necessary. Slightly acidic water is best for optimal breeding habits. After the eggs are laid removing the parents will be necessary to reduce the number of lost fry.

Silver Dollars are herbivorous and thus need plenty of vegetable matter in their daily diet. Algae tablets, flake foods or any other suitable foods should be fed multiple times daily, keeping a close watch to make sure they are getting their share from more aggressive eaters such as barbs and tetras.

Approximate Purchase Size: Small: 1" to 2"; Large: 2" to 3'

Customer Testimonials

William P Phillipsburg , KS
The Silver Dollar is a very docile fish when they are in schools of more than four. I have six and they love to stay all in sync with each other in their swimming patterns. They eat a lot of food every day and are somewhat aggressive eaters. These fish are very beautiful when you have very bright colored plants in your aquarium. The colorful lights reflect off their bodies very well. I'd recommend this species of fish from a beginner aquarist to expert aquarists.
Mark H Santa Clara , CA
I have three Silver Dollars in my 55 gallon tank. They share habitat with five Tiger Barbs, three Cherry Barbs, three Odessa Barbs, and a pair of Pepper Cory Cats. They are wonderful to watch as they school around together. Their silvery color looks so silky and smooth. During feeding time they tend to splash a lot; so drop the food and close the lid if you want to stay dry!
Will M Bristow , VA
These are very beautiful fish that are very entertaining to watch. They accept most foods and I would recommend these fish to any beginner with a large community tank.
Chris A Rio Rancho , NM
I had mine for a month and they eat from my fingers.
Jordan K Erie , PA
I bought my silver dollars 6 years ago They are doing fine I have them with 2 Clown Loach and 10 gaint Danios.
Shane H Pahrump , NV
The Silver Dollar is by far the best fish. It is the oldest fish in my aquariam so far.
John M Concord , MA
Beautiful, beautiful, beautiful! This fish looks absolutely amazing full grown, many are almost completly ROUND. I recommend this fish for anyone who has the semi-aggressive, or a large fish peaceful tank. Should supplement these guys with Algae wafers.
Jason H Woodland Hills , CA
We just lost our Silver Dollar after 27 twenty seven years....he was the size of an xl glove...a member of our family,through 3 tank upgrades... ..survivor of the 94 earthquake power for a week..he loved hikari spirulina large discs..2-3 a day! his buddy an amazon catfish is 26 years old and in need of some new pals....
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