Can Congo Tetra Live With Ruby Tetra?

Congo Tetra and Ruby Tetra CAN coexist, but with some risks. Careful setup and monitoring required.

Detailed Analysis

Temperature ✓ Compatible

Good temperature overlap at 73–82°F.

pH ✓ Compatible

Good pH overlap at 6.0–7.0.

Size ⚠ Use Caution

Significant size difference (3.5" vs 0.7"). Congo Tetra may bully or stress Ruby Tetra.

Temperament ✓ Compatible

Both fish have compatible temperaments.

Swim Level ✓ Compatible

Swim level compatibility is fine.

Important Notes

  • Congo Tetra is a schooling fish and needs at least 6 of its kind.
  • Ruby Tetra is a schooling fish and needs at least 8 of its kind.

Tank Requirements

Minimum tank size for this combination: 33 gallons

ParameterCongo TetraRuby Tetra
Temperature73–82°F68–82°F
pH6–7.55–7
Max Size3.5"0.7"
TemperamentPeacefulPeaceful
Swim LevelMiddleMiddle
Min Tank30 gal5 gal

Check More Combinations

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