Clown Loach and Pea Puffer Compatibility Overview
Clown Loach and Pea Puffer are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Clown Loach | Pea Puffer | Verdict |
|---|---|---|---|
| Temperature | 77โ86ยฐF | 74โ82ยฐF | โ 77โ82ยฐF |
| pH Range | 6.0โ7.5 | 7.0โ8.0 | โ ๏ธ 7.0โ7.5 (narrow) |
| Temperament | peaceful | semi | โ ๏ธ Monitor |
| Adult Size | 12 in | 1 in | โ 12ร difference |
| Min. Group | 5+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Clown Loach โ Chromobotia macracanthus
Striking striped loach that grows very large. Peaceful with fish but will eat shrimp, snails and tiny fish.
โ Full Clown Loach 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 Clown Loach live with Pea Puffer?
Generally not recommended. Clown Loach and Pea Puffer are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Clown Loach and Pea Puffer together?
A minimum of 100 gallons is recommended for keeping Clown Loach and Pea Puffer together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Clown Loach and Pea Puffer?
77โ82ยฐF โ inside Clown Loach's 77โ86ยฐF and Pea Puffer's 74โ82ยฐF.
Is a Clown Loach aggressive toward a Pea Puffer?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Clown Loach 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 | 100 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 150 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 220 gal | Best when keeping larger schools or reducing territorial pressure. |