Silver Dollar

Closely related to the Piranha
Silver Dollar Scientific Classification
Silver Dollar Physical Characteristics
10 years
Silver Dollar Distribition

The silver dollar fish is a fish that is native to the rivers and tributaries of South America.

Although very closely pertaining to the piranha, silver dollar fish are usually tranquil. Individuals do not have a tendency to fish for or eat them, yet these freshwater fish are commonly maintained in fish tanks all over the world.

An Unbelievable Fish: 5 Silver Dollar Realities!

  • Silver dollar fish come from the very same family, Characidae, as piranha fish and pacu fish. Unlike those kinds of fish, nevertheless, they are not hostile.
  • Among one of the most striking aspects of the silver dollar fish is its exceptionally squashed appearance, which belongs to that of a silver dollar coin.
  • Although silver dollar fish are omnivores, they feed mainly on plant issue and plant life. If maintained in a fish tank with living plants, they will usually eat every one of them.
  • There go to the very least 16 species of these fish throughout 2 category. Nonetheless, when individuals speak about silver dollar fish, they are normally describing a couple of species: Metynnis argentus and Metynnis hypsauchen
  • Many thanks to their tranquil nature and desire for education with each other, they are preferred enhancements to freshwater fish tanks.

Silver Dollar Fish Classification and Scientific Name

These fish come from the class Actinoptergii, the order Characiformes, the family Characidae and mainly the genus Metynnis, of which there are 14 explained species. 2 explained species of these fish likewise come from the genus Myloplus

That being claimed, one of the most usual fish that are taken into consideration to be silver dollar fish are Metynnis argentus and Metynnis hypsauchen, which are basically the same to each other. The main distinct attribute in between both is the existence of black spots behind the eyes and on the body of M. hypsauchen

This fish drops by its name truthfully. The name for the most usual species, Metynnis argentus, equates as adheres to: Metynnis indicates “with plowshare,” which suggests a squashed appearance; argentus indicates “covered with silver,” which conceals the fish’s silvery appearance and coloring.

Silver Dollar Fish Species

These fish are family members Characidae, which includes 217 category and 1,464 species of fish. Within both main category, Metynnis and Myloplus, there are 14 and 2 explained species, specifically. Some remarkable species of these fish consist of:

  • Silver dollar fish— Species that are called merely this are Metynnis argentus and Metynnis hypsauchen, which are virtually the same.
  • Red hook silver dollar fish— This species, Myleus rubripinnis, has various coloring and distinct fin forms when contrasted to common silver dollar fish. In the wild, they can expand to sizes of as much as 22 inches.
  • Found silver dollar fish— Located mainly in French Guyana and Brazil, this fish matures to 6.5 inches in size and has patterns of black dots.
  • Various other usual kinds of silver dollar fish consist of the candy striped silver dollar fish, or M. fasciatus; the red- detected silver dollar fish, or M. luna, which is understood for its seen appearance; the polychromatic silver dollar fish, or M. macalatus; and the black- disallowed silver dollar fish, or M. otuquensis
  • Tiger silver dollar fish– This fish, Metynnis fasciatus, is removed like a tiger and lives mainly in rivers in the Amazon rain forest.

Silver Dollar Fish Appearance

As its usual name suggests, these fish looks uncannily like a huge silver dollar coin. These fish have round, side to side squashed bodies, are extremely deep- bodied, and expand to approximately 6 inches in size. Their general coloring is silvery, yet small tips of eco-friendly and blue tinting can be seen in the ideal light problems.

Males and females look greatly the very same. Nonetheless, males have fins that are somewhat longer and that are tinged red.

As kept in mind formerly, some kinds of these fish differ in appearance and coloring. Some have spots, areas, red stripes, or bar- like patterns. Myleus rubripinnis, the red hook silver dollar fish, includes a red rectal fin and can mature to 22 inches in size.

Redhook myleus (Myloplus rubripinnis) or Redhook Silver Dollar.
RedhookSilver Dollar

Marina Veder/Shutterstock. com

Silver Dollar: The Fish’s Distribution, Population and Environment

These fish are not commonly eaten by humans, so they do not deal with the threat of being overfished. Nonetheless, main quotes of complete population numbers for these fish are not readily available. In the wild, these fish are native to South America; particularly, they are located in Guyana and in the Amazon eastern of Rio to Paraguay. It is thought that they might be native to the Tapajos River basin in Brazil also.

In the wild, these fish favor rivers that are dark and loaded with particles, consisting of peat, crushed rock, rocks, and driftwood, that make permanently hiding locations. They favor modest water moves, and they grow ideal in water with a pH degree of in between 5 and 7, a solidity of as much as 15 dGH, and a temperature level of in between 24 ° and 28 ° Celsius, or 75 ° to 82 ° Fahrenheit. As pelagic fish, these fish invest a lot of their time near the surface area of the water.

Silver Dollar Fish Predators and Victim

What Consumes The Silver Dollar?

The main predators of these fish are bigger fish, reptiles, and birds. Humans do not delight in angling for or eating these fish, so they deal with no threat there.

What Does The Silver Dollar Eat?

Although these fish are practically omnivores, they alter much more towards being herbivores than anything else. When they do eat various other animals, they have a tendency to take advantage of worms and little insects.

Silver Dollar: The Fish’s Reproduction and Life Expectancy

These fish reach sex-related maturation at concerning one year old, or when they get to roughly 4 inches in dimension. In the wild, they generate in teams in woody, greatly decayed, superficial waters in swamped rivers and tributaries. Males court females by chasing them about prior to vibrating up along with them. Females launch their eggs– around 2,000 or them– near or in drifting plants. Males after that feed the clear, somewhat yellow- tinted eggs, which after that drop and drift off right into the water. The eggs hatch out in roughly 3 days and the resulting fry have the ability to totally free swim in 6 to 9 days; they get to grown-up dimension at concerning 6 to 8 months old.

In bondage, these fish lives for approximately ten years.

Silver Dollar Fish in Angling and Food Preparation

These fish are not commonly fished or eaten by humans.

Silver Dollar Fish Population

Authorities quotes of the complete population of these fish worldwide are not readily available.


  1. Eschmeyer’s Catalog of Fishes, Available here:
  2. Fishbase, Available here:
  3. Animal World, Available here:
  4. Fishkeeping World, Available here:

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