Discus and Peacock Cichlid Compatibility Overview
Discus and Peacock Cichlid can potentially coexist, but the combination requires careful attention. Their ranges meet only at 82โ84ยฐF, which leaves no margin for a heater drifting or a warm room. Their pH ranges do not meet: Discus wants 5.0โ7.0 and Peacock Cichlid wants 7.5โ9.0. A larger tank (minimum 100 gallons), dense planting, and close monitoring are essential.
| Factor | Discus | Peacock Cichlid | Verdict |
|---|---|---|---|
| Temperature | 82โ88ยฐF | 73โ84ยฐF | โ ๏ธ 82โ84ยฐF (narrow) |
| pH Range | 5.0โ7.0 | 7.5โ9.0 | โ No overlap |
| Temperament | semi | semi | โ ๏ธ Monitor |
| Adult Size | 8 in | 5.1 in | โ Similar |
| Min. Group | 5+ | 4+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
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.
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 Discus live with Peacock Cichlid?
With significant caution and a larger tank. Discus and Peacock Cichlid can potentially coexist, but the combination requires careful attention. Their ranges meet only at 82โ84ยฐF, which leaves no margin for a heater drifting or a warm room. Their pH ranges do not meet: Discus wants 5.0โ7.0 and Peacock Cichlid wants 7.5โ9.0. A larger tank (minimum 100 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Discus and Peacock Cichlid together?
A minimum of 100 gallons is recommended for keeping Discus and Peacock Cichlid together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Discus and Peacock Cichlid?
82โ84ยฐF (narrow) โ inside Discus's 82โ88ยฐF and Peacock Cichlid's 73โ84ยฐF.
Is a Discus aggressive toward a Peacock Cichlid?
Discus is semi and Peacock Cichlid is semi. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Discus 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 | 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. |