Compatibility Overview
Pea Puffer and Peppered Cory can potentially coexist, but the combination requires careful attention. Some combination of water parameter differences, size mismatch, or temperament issues make this pair challenging. A larger tank (minimum 20 gallons), dense planting, and close monitoring are essential.
| Factor | Pea Puffer | Peppered Cory | Verdict |
|---|---|---|---|
| Temperature | 74–82°F | 72–79°F | ✅ 74–79°F |
| pH Range | 7.0–8.0 | 6.0–7.0 | ⚠️ 7.0–7.0 (narrow) |
| Temperament | semi | semi | ⚠️ Monitor |
| Adult Size | 1 in | 2.0 in | ⚠️ 2.0× difference |
| Min. Group | 1+ | 1+ | See below |
| Min. Tank Size | 20 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Pea Puffer — Carinotetraodon travancoricus
World's smallest pufferfish — intensely territorial and nippy despite tiny size. Will attack fins and eat shrimp and snails.
Peppered Cory — Aquarium species
The Peppered Cory is a popular freshwater fish known for its peaceful nature and unique appearance. They are suitable for beginners and can thrive in a community tank. These fish are small, reaching up to 7 cm in size, and are easily recognizable by their dark brown bodies with white spots. They are active but not overly aggressive, making them great additio
Frequently Asked Questions
Can Pea Puffer live with Peppered Cory?
With significant caution and a larger tank. Pea Puffer and Peppered Cory can potentially coexist, but the combination requires careful attention. Some combination of water parameter differences, size mismatch, or temperament issues make this pair challenging. A larger tank (minimum 20 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Pea Puffer and Peppered Cory together?
A minimum of 20 gallons is recommended for keeping Pea Puffer and Peppered Cory together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Pea Puffer and Peppered Cory?
74–79°F
Is a Pea Puffer aggressive toward a Peppered Cory?
Pea Puffer is semi and Peppered Cory is semi. Their preferred pH ranges are difficult to reconcile.
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 | 0/100 |
| Temperament | 62/100 |
| Adult Size | 72/100 |
| Swim Zone | 92/100 |
| 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 | 20 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 29 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 40 gal | Best when keeping larger schools or reducing territorial pressure. |