Flame Angelfish and Harlequin Rasbora Compatibility Overview
Flame Angelfish and Harlequin Rasbora are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Flame Angelfish wants 8.1โ8.4 and Harlequin Rasbora wants 5.5โ7.5. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Flame Angelfish | Harlequin Rasbora | Verdict |
|---|---|---|---|
| Temperature | 72โ82ยฐF | 72โ81ยฐF | โ 72โ81ยฐF |
| pH Range | 8.1โ8.4 | 5.5โ7.5 | โ No overlap |
| Temperament | semi | peaceful | โ ๏ธ Monitor |
| Adult Size | 4.0 in | 1.75 in | โ ๏ธ 2.3ร difference |
| Min. Group | 1+ | 8+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Flame Angelfish โ Centropyge loricula
The Flame Angelfish is a popular choice for saltwater aquariums due to its vibrant coloration and peaceful nature. It requires a spacious tank with plenty of swimming space and a stable water environment. With proper care, it can thrive in a community tank with compatible species.
โ Full Flame Angelfish care guide
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.
Frequently Asked Questions
Can Flame Angelfish live with Harlequin Rasbora?
Generally not recommended. Flame Angelfish and Harlequin Rasbora are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Flame Angelfish wants 8.1โ8.4 and Harlequin Rasbora wants 5.5โ7.5. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Flame Angelfish and Harlequin Rasbora together?
A minimum of 75 gallons is recommended for keeping Flame Angelfish and Harlequin Rasbora together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Flame Angelfish and Harlequin Rasbora?
72โ81ยฐF โ inside Flame Angelfish's 72โ82ยฐF and Harlequin Rasbora's 72โ81ยฐF.
Is a Flame Angelfish aggressive toward a Harlequin Rasbora?
Flame Angelfish is semi and Harlequin Rasbora is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Flame Angelfish and Harlequin Rasbora
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. |