Pea Puffer and Swordtail Compatibility Overview
Pea Puffer and Swordtail can potentially coexist, but the combination requires careful attention. Pea Puffer is semi and Swordtail is peaceful, so give them room and cover rather than assuming they will ignore each other. A larger tank (minimum 55 gallons), dense planting, and close monitoring are essential.
| Factor | Pea Puffer | Swordtail | Verdict |
|---|---|---|---|
| Temperature | 74โ82ยฐF | 65โ80ยฐF | โ 74โ80ยฐF |
| pH Range | 7.0โ8.0 | 7.0โ8.3 | โ 7.0โ8.0 |
| Temperament | semi | peaceful | โ ๏ธ Monitor |
| Adult Size | 1 in | 5 in | โ 5ร difference |
| Min. Group | 1+ | 3+ | See below |
| Min. Tank Size | 55 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Pea Puffer โ Carinotetraodon travancoricus
World's smallest pufferfish โ intensely territorial and nippy despite tiny size. Will attack fins and eat shrimp and snails.
โ Full Pea Puffer care guide
Swordtail โ Xiphophorus hellerii
Hardy livebearer with a distinctive elongated lower tail fin in males. Peaceful community fish that tolerate a wide temperature range.
Frequently Asked Questions
Can Pea Puffer live with Swordtail?
With significant caution and a larger tank. Pea Puffer and Swordtail can potentially coexist, but the combination requires careful attention. Pea Puffer is semi and Swordtail is peaceful, so give them room and cover rather than assuming they will ignore each other. A larger tank (minimum 55 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Pea Puffer and Swordtail together?
A minimum of 55 gallons is recommended for keeping Pea Puffer and Swordtail together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Pea Puffer and Swordtail?
74โ80ยฐF โ inside Pea Puffer's 74โ82ยฐF and Swordtail's 65โ80ยฐF.
Is a Pea Puffer aggressive toward a Swordtail?
Pea Puffer is semi and Swordtail is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Pea Puffer and Swordtail
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 55 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 75 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 125 gal | Best when keeping larger schools or reducing territorial pressure. |