Temporary reference image used on the Rainbowfish product page

Ornamental Fish

Rainbowfish

Rainbowfish are active freshwater schooling fish known for shimmering colour that often becomes stronger as adults mature. They need swimming room and are best displayed in a properly sized group.

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Quick Information

Rainbowfish at a Glance

Scientific nameMelanotaeniidae and related groups
TypeFreshwater schooling fish group
Adult sizeAbout 5–15 cm depending on species
LifespanAbout 5–8+ years depending on species
Temperature22–28 °C depending on species
pH6.5–8.0 depending on species
DietOmnivorous; varied foods
Recommended setup120 L / 30 gal+ for active species groups
Beginner-friendlywith a properly cycled, heated aquarium
Gentle water flowplus plants or smooth hiding places
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Colour, fin type, sex, size and current stock can vary. Please contact Fishes Hub before ordering so we can confirm the available fish and suitable setup.
Product photography note: the gallery currently uses temporary reference images and will be replaced with species-specific photography.

Product Information

Know More About Rainbowfish

Rainbowfish are active freshwater schooling fish known for shimmering colour that often becomes stronger as adults mature. They need swimming room and are best displayed in a properly sized group.

Use good filtration, open swimming space and a varied diet. Many rainbowfish are active enough that cramped aquariums can limit their natural behaviour.

Choose tank mates that are peaceful and able to live with an energetic schooling fish. Fishes Hub can confirm the exact rainbowfish species, adult size and current stock.

Plan the aquarium around Rainbowfish’s adult size, water parameters, behaviour and social needs. Use the quick points below to prepare a stable, low-stress setup.

Make a Confident Choice

A healthy Rainbowfish starts with the right environment, sensible feeding and careful decisions about stocking. Use these quick points to prepare a suitable setup before bringing one home.

Quick Facts
About 5–15 cm depending on speciesAdult size
22–28 °C depending on speciesTemperature
6.5–8.0 depending on speciespH
ModerateCare level
01

Key Requirements

  • Maintain stable water around 22–28 °C depending on species and use filtration appropriate to the exact species or variety.
  • Keep water chemistry near 6.5–8.0 depending on species and avoid abrupt changes.
  • 120 L / 30 gal+ for active species groups
  • Diet: Omnivorous; varied foods.
02

Care & Maintenance

  • Recommended setup: 120 L / 30 gal+ for active species groups.
  • Group/social needs: Keep in groups; species dependent.
  • Monitor appetite, waste and behaviour as part of routine care.
  • Perform regular partial water changes and maintain appropriate filtration.
03

Compatibility & Placement

  • Temperament: Active and generally peaceful.
  • Compatibility: Best with peaceful active community fish of compatible size.
  • Provide swimming space and hiding/cover appropriate to the species.
  • Do not mix fish solely by appearance; match temperature, adult size and behaviour.
04

Why Choose Rainbowfish?

  • Type: Freshwater schooling fish group.
  • Adult size: About 5–15 cm depending on species.
  • Lifespan: About 5–8+ years depending on species.
  • Care level: Moderate.
05

Before You Buy

  • Confirm the current variety/species, size and availability with Fishes Hub.
  • Prepare the aquarium before introducing fish and confirm it is suitable for the exact species.
  • Plan tank mates carefully around temperament, size and compatibility.
  • Ask Fishes Hub for current livestock availability and setup guidance.

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Let's Find the Right Rainbowfish for You.

Ask us about current Rainbowfish availability, size, compatibility and the right aquarium or pond setup.

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