Can Polar Blue Parrot Cichlid live with Harlequin Rasbora?

Troubleshooting community setups: see the compatibility result using temperature, pH, GH/KH, adult size, behavior, schooling needs, and predator/prey rules.

Quick Summary: No, this pairing should usually be avoided. We evaluated Polar Blue Parrot Cichlid and Harlequin Rasbora for 2 specific conflict codes. Plan for at least 30 gallons.

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No, avoid this pairing

Data confidence: high

Verified sources: Convict cichlid overview | Blood parrot cichlid overview

polar blue parrot cichlid | harlequin rasbora | polar blue parrot cichlid | harlequin rasbora

Observed photo context

Observed aquarium photo examples

These photos show observed aquarium setups for the selected species. They are useful context, but they do not change the compatibility result or replace tank-size, temperament, group-size, and water-parameter checks.

Harlequin rasboras schooling in a planted aquarium
Harlequin rasboras schooling in a planted aquarium.
Polar blue parrot cichlid with pale blue body and dark barring
Polar blue parrot cichlid with pale blue body and dark barring.

Water parameter comparison

Polar Blue Parrot Cichlid temperature76-82F
Harlequin Rasbora temperature72-80F
Polar Blue Parrot Cichlid pH6.8-8
Harlequin Rasbora pH6-7.8
Polar Blue Parrot Cichlid GH6-18 dGH
Harlequin Rasbora GH2-12 dGH
Minimum tank30 gal
Last updated2026-06-11

Confidence: high. Aggression, predator/prey, shrimp risk, schooling, and tank size rules are evaluated from curated freshwater attributes.

Next steps

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