A single bold black band down the midline, and around it a colour that changes with the collection site: blue in one river, gold or orange in the next.
Temperament
Common health issues
- Ich (white spot)
- Fin rot
- Skin conditions
- Swim bladder disorder
Care at a glance
- ExerciseHigh
A busy, energetic swimmer โ keep plenty of open swimming room.
- GroomingRoutine tank care
Weekly partial water changes keep them in top shape.
- Living spaceNano-tank friendly
Happy in a small, stable, well-filtered tank.
- Owner experienceFor experienced owners
Rewards owners who know the ropes.
- Commitment5โ8 years
Plan for a long, loving relationship.
Health to watch: Ich (white spot) ยท Fin rot ยท Skin conditions
๐ Care guide
The Banded Rainbowfish (Melanotaenia trifasciata) comes from streams and billabongs across northern Australia and reaches about 10 to 12 cm. Its defining feature is a strong dark stripe running the length of the body, but the surrounding colour varies dramatically between isolated populations, so fish are usually traded under their river of origin, such as Goyder River or Blyth River. A group of six or more needs a tank of 200 litres or more at 22-28C with a pH of 7.0 to 8.0 and medium to hard water, plus open swimming length and a secure lid. Feed quality flake, pellets and regular live or frozen daphnia, bloodworm and brine shrimp; a varied diet directly drives colour development. It is hardy, long-lived and peaceful, and a good rainbowfish for a first large community tank. As with the whole family, males take one to two years to reach full colour, so shop juveniles look far duller than the adult fish.
Frequently asked questions
How active is a Banded Rainbowfish?
High. A busy, energetic swimmer โ keep plenty of open swimming room.
How much maintenance does a Banded Rainbowfish need?
Routine tank care. Weekly partial water changes keep them in top shape.
What tank size does a Banded Rainbowfish need?
Nano-tank friendly. Happy in a small, stable, well-filtered tank.
Is a Banded Rainbowfish a good fit for first-time owners?
For experienced owners. Rewards owners who know the ropes.
How long do Banded Rainbowfish live?
5โ8 years. Plan for a long, loving relationship.
What health issues affect the Banded Rainbowfish?
Keep an eye out for Ich (white spot), Fin rot, Skin conditions. These are worth raising with your vet, along with any screening they recommend.
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