Harlequin Rasbora and Peacock Cichlid Compatibility Overview
Harlequin Rasbora and Peacock Cichlid can potentially coexist, but the combination requires careful attention. Their usable pH overlap is narrow and requires stable, tested water. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
| Factor | Harlequin Rasbora | Peacock Cichlid | Verdict |
|---|---|---|---|
| Temperature | 72โ81ยฐF | 73โ84ยฐF | โ 73โ81ยฐF |
| pH Range | 5.5โ7.5 | 7.5โ9.0 | โ ๏ธ 7.5โ7.5 (narrow) |
| Temperament | peaceful | semi | โ ๏ธ Monitor |
| Adult Size | 1.75 in | 5.1 in | โ ๏ธ 2.9ร difference |
| Min. Group | 8+ | 4+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
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
Peacock Cichlid โ Aulonocara stuartgranti
The Peacock Cichlid, Aulonocara nyassae, is a stunning fish with vibrant blue and yellow colors. These fish are known for their aggression and require a mature and well-maintained tank. They are best kept in pairs or in a species-specific tank. Careful attention must be given to water parameters and tank setup to ensure their health and well-being.
Frequently Asked Questions
Can Harlequin Rasbora live with Peacock Cichlid?
With significant caution and a larger tank. Harlequin Rasbora and Peacock Cichlid can potentially coexist, but the combination requires careful attention. Their usable pH overlap is narrow and requires stable, tested water. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Harlequin Rasbora and Peacock Cichlid together?
A minimum of 75 gallons is recommended for keeping Harlequin Rasbora and Peacock Cichlid together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Harlequin Rasbora and Peacock Cichlid?
73โ81ยฐF โ inside Harlequin Rasbora's 72โ81ยฐF and Peacock Cichlid's 73โ84ยฐF.
Is a Harlequin Rasbora aggressive toward a Peacock Cichlid?
Harlequin Rasbora is peaceful and Peacock Cichlid is semi. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Harlequin Rasbora and Peacock 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. |