Silver dollar size: how big does it get?

Adults reach about 15 cm. The smallest of the 4 Metynnis species on LumaReef (Plain Metynnis is the largest, 18 cm).

Silver dollar tank size: what is the minimum?

A tank at least 180 cm long. In LumaReef that is the Living room tank or larger.

Silver dollar water parameters: what does it need?

Temperature 23–28 °C, pH 5.5–7.5, hardness 2–12 °dGH. Close to what most Metynnis on LumaReef need (23–28 °C).

Silver dollar tank mates: what can it live with?

It gets along with 80 of the 99 freshwater species in the catalogue, such as Freshwater angelfish, Bristlenose pleco, and Swordtail.

Silver dollar and plants: is it plant safe?

No, it may eat or uproot plants.

FreshwaterComing soon180 coinsUncommon

Silver dollar

Metynnis argenteus

A body flat as a coin; when spooked the whole shoal bolts at once.

The Silver dollar (Metynnis argenteus) is a tropical freshwater fish of the family Serrasalmidae. Adults grow to about 15 cm. In the aquarium it needs a tank at least 180 cm long and water at 23–28 °C.

Size: 15 cm
Smallest tank: 180 cm
Temperature: 23–28 °C
Care: Moderate

In the aquarium

Temperature23–28 °C

pH5.5–7.5

Hardness2–12 °dGH

Temperament: Peaceful
Diet: Herbivore
Activity: Moderate
Water layer: Mid water
Group: Happiest in a group of 5 or more
Plants: Eats plants

These values are compiled from real species data, and the LumaReef simulation is built to keep them true to life.

Which tank it fits

Nano60 cm · 65 litresToo small
Standard90 cm · 180 litresToo small
Wide120 cm · 300 litresToo small
Living room180 cm · 650 litres32 of them
Showcase250 cm · 1,200 litres60 of them
Gallery300 cm · 1,440 litres72 of them

Who it lives with

Gets along80 species

and 56 more species

Caution10 species

Narrow shared temperature range

Not together9 species

Aggressive with peaceful

Water temperatures do not overlap

In the wild

Water type: Freshwater
Climate zone: Tropical
Aquarium trade: Traded commercially

Conservation status

Classification

OrderCharaciformes
FamilySerrasalmidae
GenusMetynnis
SpeciesMetynnis argenteus
Described byAhl, 1923

In other languages

Russian: Метиннис серебристый

Quick answers

Silver dollar size: how big does it get?: Adults reach about 15 cm. The smallest of the 4 Metynnis species on LumaReef (Plain Metynnis is the largest, 18 cm).
Silver dollar tank size: what is the minimum?: A tank at least 180 cm long. In LumaReef that is the Living room tank or larger.
Silver dollar water parameters: what does it need?: Temperature 23–28 °C, pH 5.5–7.5, hardness 2–12 °dGH. Close to what most Metynnis on LumaReef need (23–28 °C).
Silver dollar tank mates: what can it live with?: It gets along with 80 of the 99 freshwater species in the catalogue, such as Freshwater angelfish, Bristlenose pleco, and Swordtail.
Silver dollar: alone or in a group?: Keep at least 5 together.
Silver dollar and plants: is it plant safe?: No, it may eat or uproot plants.