Can Keyhole Cichlid Live With Ruby Tetra?

Keyhole Cichlid and Ruby Tetra are NOT compatible tank mates.

Detailed Analysis

Temperature ✓ Compatible

Good temperature overlap at 72–82°F.

pH ✓ Compatible

Good pH overlap at 6.0–7.0.

Size ✗ Not Compatible

Extreme size difference. Keyhole Cichlid (4") may eat or bully Ruby Tetra (0.7").

Temperament ✓ Compatible

Both fish have compatible temperaments.

Swim Level ✓ Compatible

Swim level compatibility is fine.

Important Notes

  • Ruby Tetra is a schooling fish and needs at least 8 of its kind.

Tank Requirements

Minimum tank size for this combination: 23 gallons

ParameterKeyhole CichlidRuby Tetra
Temperature72–82°F68–82°F
pH6–7.55–7
Max Size4"0.7"
TemperamentPeacefulPeaceful
Swim LevelMiddleMiddle
Min Tank20 gal5 gal

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