Cardinal Tetra

Cardinal Tetra

Paracheirodon axelrodi
⚠ Use Caution
Turquoise Rainbowfish

Turquoise Rainbowfish

Melanotaenia lacustris

Can Cardinal Tetra Live With Turquoise Rainbowfish?

Cardinal Tetra and Turquoise Rainbowfish CAN coexist, but with some risks. Careful setup and monitoring required.

Detailed Analysis

Temperature ✓ Compatible

Good temperature overlap at 73–78°F.

pH ⚠ Use Caution

Very narrow pH overlap (7.0–7.0). Hard to maintain precisely.

Size ✓ Compatible

Compatible sizes (2" and 4").

Temperament ✓ Compatible

Both fish have compatible temperaments.

Swim Level ✓ Compatible

Swim level compatibility is fine.

Important Notes

  • Cardinal Tetra is a schooling fish and needs at least 6 of its kind.
  • Turquoise Rainbowfish is a schooling fish and needs at least 6 of its kind.

Tank Requirements

Minimum tank size for this combination: 30 gallons

ParameterCardinal TetraTurquoise Rainbowfish
Temperature73–84°F72–78°F
pH5–77–8
Max Size2"4"
TemperamentPeacefulPeaceful
Swim LevelMiddleMiddle
Min Tank10 gal30 gal

Check More Combinations

Use our compatibility checker to add more fish and plan your complete tank.