Blue Rainbowfish Care Guide
Melanotaenia lacustris
Stocking Calculator
Bioload Score
2800
PeacefulModerateFreshwater
- Max Size
- 11.5 cm / 4.5"
- Temperature
- 22–26°C (72–79°F)
- pH Range
- 7.0 – 8.0
- Min Tank Size
- 113L (30 gal)
- Min Group Size
- 6 fish
- Tank Level
- Bottom-Mid
- Origin
- Southeast Asia
- Temperament
- Peaceful
- Difficulty
- Moderate
- Breeding Difficulty
- Moderate
Diet
Omnivorous, prefers a varied diet of flake foods, live and frozen foods such as brine shrimp and daphnia.
Community Compatibility
Suitable for community tanks with other peaceful, similarly sized fish. Avoid very small species that could be intimidated by their size and activity level.
Good to Know
The Blue Rainbowfish is renowned for its brilliant blue coloration and active swimming behavior.
Gender Differences
Males are larger and more brightly colored than females, with elongated dorsal and anal fins.
Stock Blue Rainbowfish in Your Tank
Use our free stocking calculator to see if Blue Rainbowfish fits your aquarium