Compatibility Overview
Discus and Jewel Cichlid 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 | Discus | Jewel Cichlid | Verdict |
|---|---|---|---|
| Temperature | 82–88°F | 72–79°F | ❌ No overlap |
| pH Range | 5.0–7.0 | 7.0–8.0 | ⚠️ 7.0–7.0 (narrow) |
| Temperament | semi | aggressive | ❌ Risk |
| Adult Size | 8 in | 3.1 in | ⚠️ 2.6× difference |
| Min. Group | 5+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | — | |
✅ Compatibility Positives
❌ Incompatibility Reasons
Species Profiles
Discus — Symphysodon spp.
The 'king of the aquarium' — beautiful but demanding. Requires very warm, soft, acidic water that excludes most community fish.
Jewel Cichlid — Aquarium species
The Jewel Cichlid, Hemichromis bimaculatus, is a vibrant and territorial fish popular in the aquarium trade. They require a spacious tank with hiding spots and can be moderately aggressive. With proper care, they can be a rewarding addition to the home aquarium.
Frequently Asked Questions
Can Discus live with Jewel Cichlid?
Generally not recommended. Discus and Jewel Cichlid 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 Discus and Jewel Cichlid together?
A minimum of 100 gallons is recommended for keeping Discus and Jewel Cichlid together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Discus and Jewel Cichlid?
No overlap
Is a Discus aggressive toward a Jewel Cichlid?
Discus is semi and Jewel Cichlid is aggressive. Their preferred temperature ranges have little or no safe overlap.
Related Compatibility Guides
Compatibility score breakdown
The overall score is weighted across water chemistry, behavior, adult size, swimming zone, and social needs. A score is a planning aid—not a guarantee for individual fish.
| Factor | Score |
|---|---|
| Temperature | 0/100 |
| Ph | 0/100 |
| Temperament | 25/100 |
| Adult Size | 72/100 |
| Swim Zone | 68/100 |
| Social Needs | 92/100 |
Tank size scenarios
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. |