Compatibility Overview
Cherry Barb and Discus are generally not recommended to be housed together. The issues listed above — whether water parameter incompatibility, predation risk, or aggression — create conditions where one or both fish are likely to suffer harm or chronic stress.
| Factor | Cherry Barb | Discus | Verdict |
|---|---|---|---|
| Temperature | 73–81°F | 82–88°F | ❌ No overlap |
| pH Range | 6.0–8.0 | 5.0–7.0 | ✅ 6.0–7.0 |
| Temperament | peaceful | semi | ⚠️ Monitor |
| Adult Size | 2 in | 8 in | ❌ 4× difference |
| Min. Group | 6+ | 5+ | See below |
| Min. Tank Size | 100 gallons (for both species) | — | |
✅ Compatibility Positives
❌ Incompatibility Reasons
Species Profiles
Cherry Barb — Puntius titteya
Unlike most barbs, cherry barbs are peaceful schooling fish safe with bettas and nano species. Males turn vivid red when in breeding condition.
Discus — Symphysodon spp.
The 'king of the aquarium' — beautiful but demanding. Requires very warm, soft, acidic water that excludes most community fish.
Frequently Asked Questions
Can Cherry Barb live with Discus?
Generally not recommended. Cherry Barb and Discus are generally not recommended to be housed together. The issues listed above — whether water parameter incompatibility, predation risk, or aggression — create conditions where one or both fish are likely to suffer harm or chronic stress.
What tank size do I need for Cherry Barb and Discus together?
A minimum of 100 gallons is recommended for keeping Cherry Barb and Discus together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Cherry Barb and Discus?
No overlap
Is a Cherry Barb aggressive toward a Discus?
Cherry Barb is peaceful and Discus is semi. Temperature ranges do not overlap: Cherry Barb needs 73–81°F; Discus needs 82–88°F.