Harlequin Rasbora and Jewel Cichlid Compatibility Overview
Harlequin Rasbora and Jewel Cichlid are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Harlequin Rasbora is peaceful and Jewel Cichlid is aggressive. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Harlequin Rasbora | Jewel Cichlid | Verdict |
|---|---|---|---|
| Temperature | 72โ81ยฐF | 72โ82ยฐF | โ 72โ81ยฐF |
| pH Range | 5.5โ7.5 | 6.0โ7.8 | โ 6.0โ7.5 |
| Temperament | peaceful | aggressive | โ Risk |
| Adult Size | 1.75 in | 5.9 in | โ ๏ธ 3.4ร difference |
| Min. Group | 8+ | 2+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Harlequin Rasbora โ Trigonostigma heteromorpha
Active mid-level schooling fish with a distinctive black triangular patch. One of the best all-around community tank fish.
โ Full Harlequin Rasbora care guide
Jewel Cichlid โ Hemichromis bimaculatus
The Jewel Cichlid, Hemichromis bimaculatus, is a vibrant and territorial fish popular in the aquarium trade. They require a spacious tank with hiding spots and can be moderately aggressive. With proper care, they can be a rewarding addition to the home aquarium.
Frequently Asked Questions
Can Harlequin Rasbora live with Jewel Cichlid?
Generally not recommended. Harlequin Rasbora and Jewel Cichlid are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Harlequin Rasbora is peaceful and Jewel Cichlid is aggressive. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Harlequin Rasbora and Jewel Cichlid together?
A minimum of 75 gallons is recommended for keeping Harlequin Rasbora and Jewel Cichlid together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Harlequin Rasbora and Jewel Cichlid?
72โ81ยฐF โ inside Harlequin Rasbora's 72โ81ยฐF and Jewel Cichlid's 72โ82ยฐF.
Is a Harlequin Rasbora aggressive toward a Jewel Cichlid?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Harlequin Rasbora and Jewel Cichlid
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 75 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 125 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 150 gal | Best when keeping larger schools or reducing territorial pressure. |