Compatibility Overview
Pea Puffer and Serpae Tetra 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 15 gallons), dense planting, and close monitoring are essential.
| Factor | Pea Puffer | Serpae Tetra | Verdict |
|---|---|---|---|
| Temperature | 74–82°F | 72–82°F | ✅ 74–82°F |
| pH Range | 7.0–8.0 | 6.0–7.0 | ⚠️ 7.0–7.0 (narrow) |
| Temperament | semi | semi | ⚠️ Monitor |
| Adult Size | 1 in | 1.6 in | ✅ Similar |
| Min. Group | 1+ | 1+ | See below |
| Min. Tank Size | 15 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.
Serpae Tetra — Aquarium species
The Serpae Tetra is a popular freshwater fish known for its vibrant coloration and peaceful nature. It is well-suited for community tanks and can be a great addition to any aquarium. With its moderate activity level and easy care requirements, it is a suitable choice for beginners and experienced aquarists alike.
Frequently Asked Questions
Can Pea Puffer live with Serpae Tetra?
With significant caution and a larger tank. Pea Puffer and Serpae Tetra 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 15 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Pea Puffer and Serpae Tetra together?
A minimum of 15 gallons is recommended for keeping Pea Puffer and Serpae Tetra together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Pea Puffer and Serpae Tetra?
74–82°F
Is a Pea Puffer aggressive toward a Serpae Tetra?
Pea Puffer is semi and Serpae Tetra 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 | 100/100 |
| Ph | 0/100 |
| Temperament | 62/100 |
| Adult Size | 100/100 |
| 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 | 15 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 | 29 gal | Best when keeping larger schools or reducing territorial pressure. |