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Rainbow shark, photographed on a transparent background

FreshwaterComing soon130 coinsUncommon

Rainbow shark

Epalzeorhynchos frenatum

It claims a patch of the bottom and chases off any lookalike that enters.

The Rainbow shark (Epalzeorhynchos frenatum) is a tropical freshwater fish of the family Cyprinidae. It swims in midwater, close to the bottom. Adults grow to about 15 cm. In the aquarium it needs a tank at least 120 cm long and water at 22–27 °C.

Size
15 cm
Smallest tank
120 cm
Temperature
22–27 °C
Care
Moderate

In the aquarium

Temperature22–27 °C
pH6.5–7.8
Hardness4–16 °dGH
Temperament
Semi-aggressive
Diet
Omnivore
Activity
Moderate
Water layer
Bottom
Group
Lives on its own
Plants
Plant safe
Drawn to scale in a 120 cm tank

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 litres18 of them
  • Living room180 cm · 650 litres40 of them
  • Showcase250 cm · 1,200 litres75 of them
  • Gallery300 cm · 1,440 litres90 of them

Who it lives with

In the wild

Water type
Freshwater
Climate zone
Tropical
Habitat
Midwater, close to the bottom
Aquarium trade
Traded commercially

Conservation status

Classification

  1. OrderCypriniformes
  2. FamilyCyprinidae
  3. GenusEpalzeorhynchos
  4. SpeciesEpalzeorhynchos frenatum
  5. Described byFowler, 1934

In other languages

English
Rainbow Sharkminnow
German
Grüner Fransenlipper
Spanish
Tiburón arco iris
Russian
Таиландский лабео
Japanese
レインボーシャーク

Quick answers

Rainbow shark size: how big does it get?
Adults reach about 15 cm. Record sizes among the 4 Epalzeorhynchos species on LumaReef: 9.3 cm (Redfin Shark) to 16 cm (Flying Fox Carp).
Rainbow shark tank size: what is the minimum?
A tank at least 120 cm long. In LumaReef that is the Wide tank or larger.
Rainbow shark water parameters: what does it need?
Temperature 22–27 °C, pH 6.5–7.8, hardness 4–16 °dGH. Close to what most Epalzeorhynchos on LumaReef need (20–26 °C).
Rainbow shark tank mates: what can it live with?
It gets along with 64 of the 99 freshwater species in the catalogue, such as Bristlenose pleco, Sailfin molly, and Giant danio.
Rainbow shark: alone or in a group?
It can be kept on its own.
Rainbow shark and plants: is it plant safe?
Yes, it leaves plants alone.

All Cyprinidae speciesAll species A–Z

Sources

Rainbow shark: compiled from these references.