Neon Tetra and Pea Puffer Compatibility Overview
Neon Tetra and Pea Puffer can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Neon Tetra is peaceful and Pea Puffer is semi, so give them room and cover rather than assuming they will ignore each other. A minimum 20-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Neon Tetra | Pea Puffer | Verdict |
|---|---|---|---|
| Temperature | 72โ80ยฐF | 74โ82ยฐF | โ 74โ80ยฐF |
| pH Range | 6.0โ7.5 | 7.0โ8.0 | โ ๏ธ 7.0โ7.5 (narrow) |
| Temperament | peaceful | semi | โ ๏ธ Monitor |
| Adult Size | 1.5 in | 1 in | โ Similar |
| Min. Group | 6+ | 1+ | See below |
| Min. Tank Size | 20 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Neon Tetra โ Paracheirodon innesi
Iconic schooling fish with vivid electric-blue and red stripes. Hardy in captivity; suitable for most peaceful community setups.
โ Full Neon Tetra care guide
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.
Frequently Asked Questions
Can Neon Tetra live with Pea Puffer?
Yes, in a well-planned setup. Neon Tetra and Pea Puffer can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Neon Tetra is peaceful and Pea Puffer is semi, so give them room and cover rather than assuming they will ignore each other. A minimum 20-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Neon Tetra and Pea Puffer together?
A minimum of 20 gallons is recommended for keeping Neon Tetra and Pea Puffer together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Neon Tetra and Pea Puffer?
74โ80ยฐF โ inside Neon Tetra's 72โ80ยฐF and Pea Puffer's 74โ82ยฐF.
Is a Neon Tetra aggressive toward a Pea Puffer?
Neon Tetra is peaceful and Pea Puffer is semi. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Neon Tetra and Pea Puffer
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 | 55 gal | Best when keeping larger schools or reducing territorial pressure. |