Can Cardinal Tetra Live With Polystigma Cichlid?

Cardinal Tetra and Polystigma Cichlid are NOT compatible tank mates.

Detailed Analysis

Temperature ✓ Compatible

Good temperature overlap at 75–82°F.

pH ✗ Not Compatible

No pH overlap. Cardinal Tetra needs pH 5–7, but Polystigma Cichlid needs pH 7.5–8.5.

Size ⚠ Use Caution

Significant size difference (9" vs 2"). Polystigma Cichlid may bully or stress Cardinal Tetra.

Temperament ✗ Not Compatible

Cardinal Tetra (peaceful) is not compatible with Polystigma Cichlid (aggressive). Aggression or stress is very likely.

Swim Level ⚠ Use Caution

Both fish occupy the middle level and Polystigma Cichlid is territorial. Provide plenty of space and hiding spots.

Trait Conflict ✗ Not Compatible

Polystigma Cichlid is a predator and may eat Cardinal Tetra.

Important Notes

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

Tank Requirements

Minimum tank size for this combination: 75 gallons

ParameterCardinal TetraPolystigma Cichlid
Temperature73–84°F75–82°F
pH5–77.5–8.5
Max Size2"9"
TemperamentPeacefulAggressive
Swim LevelMiddleMiddle
Min Tank10 gal75 gal

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