Compatibility Overview
Jewel Cichlid and Pea Puffer 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 | Jewel Cichlid | Pea Puffer | Verdict |
|---|---|---|---|
| Temperature | 72–79°F | 74–82°F | ✅ 74–79°F |
| pH Range | 7.0–8.0 | 7.0–8.0 | ✅ 7.0–8.0 |
| Temperament | aggressive | semi | ❌ Risk |
| Adult Size | 3.1 in | 1 in | ⚠️ 3.1× difference |
| Min. Group | 1+ | 1+ | See below |
| Min. Tank Size | 29 gallons (for both species) | — | |
✅ Compatibility Positives
❌ Incompatibility Reasons
Species Profiles
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.
→ Full Jewel Cichlid care guide
Pea Puffer — Carinotetraodon travancoricus
World's smallest pufferfish — intensely territorial and nippy despite tiny size. Will attack fins and eat shrimp and snails.
Frequently Asked Questions
Can Jewel Cichlid live with Pea Puffer?
Generally not recommended. Jewel Cichlid and Pea Puffer 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 Jewel Cichlid and Pea Puffer together?
A minimum of 29 gallons is recommended for keeping Jewel Cichlid and Pea Puffer together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Jewel Cichlid and Pea Puffer?
74–79°F
Is a Jewel Cichlid aggressive toward a Pea Puffer?
Jewel Cichlid is aggressive and Pea Puffer is semi. The adult size gap creates a meaningful predation risk.
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 | 71/100 |
| Ph | 100/100 |
| Temperament | 25/100 |
| Adult Size | 38/100 |
| 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 | 29 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 40 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 55 gal | Best when keeping larger schools or reducing territorial pressure. |