Hillstream Loach and Pea Puffer Compatibility Overview
Hillstream Loach and Pea Puffer can potentially coexist, but the combination requires careful attention. Their ranges meet only at 74โ75ยฐF, which leaves no margin for a heater drifting or a warm room. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. A larger tank (minimum 20 gallons), dense planting, and close monitoring are essential.
| Factor | Hillstream Loach | Pea Puffer | Verdict |
|---|---|---|---|
| Temperature | 68โ75ยฐF | 74โ82ยฐF | โ ๏ธ 74โ75ยฐF (narrow) |
| pH Range | 6.0โ7.5 | 7.0โ8.0 | โ ๏ธ 7.0โ7.5 (narrow) |
| Temperament | peaceful | semi | โ ๏ธ Monitor |
| Adult Size | 2.6 in | 1 in | โ ๏ธ 2.6ร difference |
| Min. Group | 4+ | 1+ | See below |
| Min. Tank Size | 20 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Hillstream Loach โ Sewellia lineolata
Sewellia lineolata, known as the Hillstream Loach, is a fascinating species for aquarists. These fish require a well-oxygenated, clear water environment with plenty of hiding spots. With a lifespan of 7 years, they are a long-term commitment. Their olive green color and slender body shape add a unique aesthetic to the tank.
โ Full Hillstream 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 Hillstream Loach live with Pea Puffer?
With significant caution and a larger tank. Hillstream Loach and Pea Puffer can potentially coexist, but the combination requires careful attention. Their ranges meet only at 74โ75ยฐF, which leaves no margin for a heater drifting or a warm room. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. A larger tank (minimum 20 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Hillstream Loach and Pea Puffer together?
A minimum of 20 gallons is recommended for keeping Hillstream Loach and Pea Puffer together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Hillstream Loach and Pea Puffer?
74โ75ยฐF (narrow) โ inside Hillstream Loach's 68โ75ยฐF and Pea Puffer's 74โ82ยฐF.
Is a Hillstream Loach aggressive toward a Pea Puffer?
Hillstream Loach is peaceful and Pea Puffer is semi. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Hillstream 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 | 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. |