Can Harlequin Rasbora Live With Polystigma Cichlid?

Harlequin Rasbora and Polystigma Cichlid are NOT compatible tank mates.

Detailed Analysis

Temperature ✓ Compatible

Good temperature overlap at 75–82°F.

pH ⚠ Use Caution

Very narrow pH overlap (7.5–7.5). Hard to maintain precisely.

Size ⚠ Use Caution

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

Temperament ✗ Not Compatible

Harlequin Rasbora (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 Harlequin Rasbora.

Important Notes

  • Harlequin Rasbora is a schooling fish and needs at least 6 of its kind.

Tank Requirements

Minimum tank size for this combination: 75 gallons

ParameterHarlequin RasboraPolystigma Cichlid
Temperature72–82°F75–82°F
pH6–7.57.5–8.5
Max Size2"9"
TemperamentPeacefulAggressive
Swim LevelMiddleMiddle
Min Tank10 gal75 gal

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