Can Achilles Tang Live With Blue-Eyed Cardinalfish?

Achilles Tang and Blue-Eyed Cardinalfish are NOT compatible tank mates.

Detailed Analysis

Temperature ✓ Compatible

Good temperature overlap at 74–82°F.

pH ✓ Compatible

Good pH overlap at 8.0–8.4.

Size ⚠ Use Caution

Significant size difference (10" vs 2"). Achilles Tang may bully or stress Blue-Eyed Cardinalfish.

Temperament ✗ Not Compatible

Achilles Tang (aggressive) is not compatible with Blue-Eyed Cardinalfish (peaceful). Aggression or stress is very likely.

Swim Level ✓ Compatible

Swim level compatibility is fine.

Important Notes

  • Blue-Eyed Cardinalfish is a schooling fish and needs at least 3 of its kind.

Tank Requirements

Minimum tank size for this combination: 130 gallons

ParameterAchilles TangBlue-Eyed Cardinalfish
Temperature74–82°F74–82°F
pH8–8.48–8.4
Max Size10"2"
TemperamentAggressivePeaceful
Swim LevelAllMiddle
Min Tank125 gal10 gal

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