Red Hook Silver Dollar fish are also known as Redhook fish or Myloplus rubripinnis. They are a joy to watch in any freshwater aquarium setup. Caring for them requires you to have solid know-how on their behavior, suitable tankmates, and the best diet to keep them in tip-top shape.

Red Hook Silver Dollars are among the most popular fish for both novice and experienced aquarists. Aside from being excellent dither fish for your tank, they are also beautiful to watch due to their personable nature.

Read on to learn all you need to know about raising and breeding healthy, happy, and handsome Red Hook Silver Dollars.

A Care Guide for Red Hook Silver Dollars

Knowing how to care for new fish before you even bring them into your aquariums is a great way to ensure their health, happiness, and longevity. Red hook metynnis fish are a type of large silver dollar fish that share many similarities in terms of care and behavior.

Learn all about how to care for your Red Hook Silver Dollars with these tips from our experts.

– Keep Your Red Hook Silver Dollars in a School of Six or More

Red Hook Silver Dollars are schooling fish. This classification means that they always move as a group with members of the same species. An ideal school size for this type of fish would range from at least six to ten Red Hook Silver Dollars in one aquarium.

– Provide Them With Enough Space for Shoaling

Aside from being a schooling fish, Red Hook Silver Dollars also exhibit shoaling behavior. Shoaling fish stay together for security and sometimes for establishing a pecking order — fish like these need to be in a long tank with a capacity of at least 125 gallons.

– Avoid Using Them as Dither Fish for Aggressive Species

Red Hook Silver Dollars make for excellent dither fish due to their calm nature. They are almost always out in the open. This, in turn, encourages shyer members of a community tank to come out and interact with others as well.

However, you should avoid using them as dither fish that are meant to distract the more aggressive species in your tank. It will only stress out your Red Hook Silver Dollars and make them prone to illnesses.

The Best Tank Mates for Your Red Hook Silver Dollars

The best tankmates for silver dollars are usually bottom feeders or peaceful upper and mid-water level fish like catfish, placid tetras, and loaches.

Below are some examples of fish that would make excellent neighbors for your Red Hook Silver Dollars.


Called plecos for short, these fish are bottom feeders that are not only peaceful neighbors but also excellent housekeepers.


Like plecos, these fish thrive at the bottom level of your tank. They are not usually aggressive, and they tend to do well in moderately planted tanks with a rich substrate.

– Loaches

Loaches are colorful scavengers. They are not overly territorial, and they mind their own business most of the time.

You might also want to pair your silver dollars with other docile tetras that are not too small in size. You can even introduce Red Hook Silver Dollars to tanks with cichlids, provided that the cichlids you have are non-aggressive and are of almost the same size as your silver dollars.

Breeding Red Hook Silver Dollars With Ease

You can quickly breed more of your wonderful Red Hook Silver Dollars by planning and making the necessary preparations.

Read on to learn how to prepare for a successful breeding season for this particular fish.

– Prepare a Separate, Planted Tank for Your Breeders

While the breeding tank usually is smaller than your fish’s community tank, it should still have superb water quality to make for ideal breeding conditions.

In this case, you want to keep your water soft at about 8dH or less. You should also maintain the tank’s temperature between 80 and 82 degrees Fahrenheit. Keep the tank under low light settings with a heavy volume of fauna towards the middle and bottom layers.

– Select a Healthy and Dedicated Breeding Pair

The ideal Red Hook Silver Dollar breeding pair will have a male determinedly chasing its desired female. Both males and females should be healthy and have a good appetite.

– Leave the Breeding Pair in Their Tank and Wait for Eggs to Appear

Keep the tank dimly lit at this stage of the breeding process. Shortly after a successful mating, the female should be able to release thousands of scattered eggs throughout the tank. This is where the plants at the middle and bottom layers of your tank will come in handy. They will serve as nesting grounds for the eggs until they hatch.

Aid the Fish Fry for a Few Months Before Releasing Them Into The Community Tank
The eggs should hatch after three to four days in the breeding tank.

Keep the newly hatched fish fry in the breeding tank. Monitor them and supplement their growth with fish fry food. You can release them into the community tank after a few months or before reaching maturity at eight months of age.

Quick Stats for Red Hook Silver Dollars

Remember that the Red Hook Silver Dollar is a kind of Tetra with features similar to that of the infamous piranha. Almost circular in shape, this fish is known for its prominent red-tinged and hooked anal fin.

Here are a few fast facts about this popular fish:

– Size

The average adult Red Hook Silver Dollar size can range from 8 to 10 inches, with the males eventually becoming bigger than the females.

– Temperament

This fish is peaceful and lively; it thrives in schools of six or more.

– Origins

These rhomboid tetras were originally found in the freshwater environment of the Orinoco system in South America.

– Tank Requirements

This fish can be raised in single-species tanks or community tanks with low to moderate amounts of fauna. An ideal tank would measure at least 48 inches in length to provide space for the fish’s shoaling tendencies.

– Water Requirements

Red Hook Silver Dollars do best in tanks with a water pH level of 5.0 to 7.0, a hardness level of 4 to 15 degrees, and a temperature of 73 to 81 degrees Fahrenheit.

– Diet and Feeding Adaptability

The Red Hook Silver Dollar is not difficult to feed. Their diet consists primarily of fish flakes and frozen food, with a regular helping of vegetables.

– Compatibility With Other Fish

This type of fish makes excellent tankmates for shy fish. They are sometimes used as dither fish due to their docile nature.

As shown through all of the basic facts we just covered, it’s clear that Red Hook Silver Dollars are not that difficult to maintain. But why stop at the bare minimum?

If you want your new Red Hook Silver Dollars to thrive in your tank, read on to learn more about these amazing fish.

The Optimal Diet for Your Red Hook Silver Dollars’ Best Health

Aside from tank conditions and suitable tankmates, you need to give your silver dollars a balanced mix of flakes or pellets, leafy greens, and even some algae or worms for dietary supplements.

Find out how to make the optimal diet for your Red Hook Silver Dollars by reading the tips below.

– Go for Premium Fish Flakes or Pellets

If you can afford it, always choose premium fish flakes or pellets for your silver dollars. Premium food is made of whole foods than chemicals or flavorings. Investing in premium fish food will save you on health costs later on.

– The Bigger the Fish, the Bigger the Food

Some novice fishkeepers feed one time of fish flakes to their silver dollars for their entire lifespan. This results in the fish being hungry most of the time. As your silver dollars grow in age and size, be sure to increase their food intake as well.

– Add vegetables and fruits for a balanced diet

In the wild, Red Hook Silver Dollars occasionally feed on pieces of fruit or vegetables.

Imitating this will make feeding time fun for your fish and ensure that they have access to vitamins and minerals they can get from fresh, properly cut-up fruit and veg. You can feed fruits such as melons, leafy vegetables, edible seeds such as green peas, and even gourds like squash or pumpkin.

Summing Up What We Learned

We’ve discussed a lot about Red Hook Silver Dollars and how to give them the best life in your aquarium.

Let’s recap what we learned!

  • Red Hook Silver Dollars are peaceful, schooling fish.
  • They are relatively easy to breed as long as you make the necessary preparations.
  • They can be used as dither fish, but ideally only to bring out the shyer members of your aquatic community.
  • They pair well with most bottom feeders and other docile (but not too small!) fish.
  • They are easy to feed and appreciate a diet of leafy greens, the occasional fruit, high-quality fish flakes, and even algae and bloodworms.

Now that you know the ins and outs of raising Red Hook Silver Dollar fish, you can introduce and care for them in your tank with absolute confidenc

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