Discus and Rosy Barb Compatibility Overview
Discus and Rosy Barb are generally not recommended to be housed together. There is no shared temperature: Discus needs 82โ88ยฐF and Rosy Barb needs 61โ75ยฐF. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Discus | Rosy Barb | Verdict |
|---|---|---|---|
| Temperature | 82โ88ยฐF | 61โ75ยฐF | โ No overlap |
| pH Range | 5.0โ7.0 | 6.0โ8.0 | โ 6.0โ7.0 |
| Temperament | semi | peaceful | โ ๏ธ Monitor |
| Adult Size | 8 in | 3.9 in | โ ๏ธ 2.1ร difference |
| Min. Group | 5+ | 8+ | 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.
Rosy Barb โ Pethia conchonius
The Rosy Barb is a popular freshwater fish known for its vibrant coloration and peaceful nature. It is well-suited for community tanks with other non-aggressive species. They require a well-maintained environment and can be sensitive to water quality fluctuations. With proper care, they can thrive and add a splash of color to your aquarium.
Frequently Asked Questions
Can Discus live with Rosy Barb?
Generally not recommended. Discus and Rosy Barb are generally not recommended to be housed together. There is no shared temperature: Discus needs 82โ88ยฐF and Rosy Barb needs 61โ75ยฐF. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Discus and Rosy Barb together?
A minimum of 100 gallons is recommended for keeping Discus and Rosy Barb together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Discus and Rosy Barb?
There is no safe shared range: Discus needs 82โ88ยฐF and Rosy Barb needs 61โ75ยฐF.
Is a Discus aggressive toward a Rosy Barb?
Discus is semi and Rosy Barb is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Discus and Rosy Barb
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. |