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Freshwater   Fishes

Silver dollar
(Metynnis hypsauchen)

Silver dollar

Alternative species (click on the thumbnail to see the card)

  • None (for the moment!)

Names

Scientific name
Metynnis hypsauchen
Metynnis callichromus
Metynnis erhardti
Metynnis fasciatus
Myletes ocinoccensis
Myletes schreitmülleri

Common name
Silver dollar

Origin

what are its countries of origin?

Origin: South America
Biotope: Amazonian

Dimorphism

what are the physical differences between males and females?

The male has a more elongated, hook-shaped, colored anal fin.

Group

Group

Characidae (Serrasalmidae)

Volume

what is the minimum volume for this species?

300 L / 66 imp gal / 79 US gal

Parameters

what are the water parameters for the maintenance of this fish?

T°: 24 to 28°C or 75 to 82°F
pH: 5 to 7
Hardness: 3 to 10°dGH

Difficulty

Difficulty

Average

Size

what is the maximum size of this fish?

15cm (5.9")

Longevity

what is the average Longevity of this fish?

5 to 10 years

Living zone

in which area of the aquarium does this fish live?

middle and Top

Individuals

sociability of the species

5

Food

How to feed the Silver dollar?

Food

How to feed the Silver dollar?

Omnivorous: all forms of food are accepted with daily plant supplements (avocado, banana, apple, pear, pineapple, cucumber, zucchini, spinach, peas, salad). Spirulina will also be very appreciated as well as feasts based on mud worms.

Behavior

What kind of behavior does the Silver dollar have?

Behavior

What kind of behavior does the Silver dollar have?

Peaceful and shy, they move in benches. On the other hand, when it comes to food, they can be aggressive. They are tireless swimmers and always on the move. In good piranhas, they can attack a weak or sickly fellow creature. They are very gregarious and must imperatively be kept in schools.

Cohabitation

Who can live with the Silver dollar?

Cohabitation

Who can live with the Silver dollar?

The Silver Dollar can be kept with larger species because smaller fish may be used as a meal. These roommates will be as peaceful as he is. Since Silver Dollars live more in the middle and on the surface, they will coexist without any problem with the Plecos or catfish that live at the bottom of the tank.

Breeding

How to breed the Silver dollar?

Breeding

How to breed the Silver dollar?

The reproduction of this species is very difficult. Place a group of individuals, previously conditioned for reproduction (well-fed), in a laying trough (200 L / 44 Imp Gal / 53 US Gal) equipped with a protective grid. Temperature 26/28°C (79/82°F), pH 6.5/7 and moderate lighting. Peat filtration. Changing to slightly warmer water can help fish to spawn. Up to 2000 eggs can be laid. Remove parents after spawning. Incubation takes 70 hours at 28°C (82°F). The fry develop rapidly.

Fry food: infusers, artemia and cyclops nauplia.

Its aquarium

Which aquarium for the Silver dollar?

Its aquarium

Which aquarium for the Silver dollar?

Specific aquarium preferable. The main rule of its tank is that it must not contain plants that are too thin (they would be eaten on the spot, which will cost you a lot in the long run). On the contrary, prefer very robust plants with large leaves and large dimensions such as Echinoderms. However, there is a good chance that these plants will also need to be changed regularly. The Silver Dollar is really an avid plant eater! Another solution could be to opt for artificial plants.

Peat filtration is mandatory and a high flow rate will ensure good oxygenation.

Provide refuge areas with hiding places and dim the lighting, this will calm the nervousness of this fish.

Good To know

Find all additional information!

Good To know

Find all additional information!

It only reaches sexual maturity after 3 years.

Distinguished from Metynnis Argenteus by the black spot above each eye. These two species are however very often confused.

Its flat, molariform teeth are very well adapted to chewing and chopping plants and they grow continuously.

Translated with www.DeepL.com/Translator (free version)

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