Discus and Flame Angelfish Compatibility Overview
Discus and Flame Angelfish 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 ranges meet only at 82โ82ยฐF, which leaves no margin for a heater drifting or a warm room. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Discus | Flame Angelfish | Verdict |
|---|---|---|---|
| Temperature | 82โ88ยฐF | 72โ82ยฐF | โ ๏ธ 82โ82ยฐF (narrow) |
| pH Range | 5.0โ7.0 | 8.1โ8.4 | โ No overlap |
| Temperament | semi | semi | โ ๏ธ Monitor |
| Adult Size | 8 in | 4.0 in | โ ๏ธ 2.0ร difference |
| Min. Group | 5+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Discus โ Symphysodon spp.
The 'king of the aquarium' โ beautiful but demanding. Requires very warm, soft, acidic water that excludes most community fish.
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.
Frequently Asked Questions
Can Discus live with Flame Angelfish?
Generally not recommended. Discus and Flame Angelfish 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 ranges meet only at 82โ82ยฐF, which leaves no margin for a heater drifting or a warm room. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Discus and Flame Angelfish together?
A minimum of 100 gallons is recommended for keeping Discus and Flame Angelfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Discus and Flame Angelfish?
82โ82ยฐF (narrow) โ inside Discus's 82โ88ยฐF and Flame Angelfish's 72โ82ยฐF.
Is a Discus aggressive toward a Flame Angelfish?
Discus is semi and Flame Angelfish is semi. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Discus and Flame Angelfish
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 100 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 150 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 220 gal | Best when keeping larger schools or reducing territorial pressure. |