Hillstream Loach and Percula Clownfish Compatibility Overview
Hillstream Loach and Percula Clownfish are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their ranges meet only at 74โ75ยฐF, which leaves no margin for a heater drifting or a warm room. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Hillstream Loach | Percula Clownfish | Verdict |
|---|---|---|---|
| Temperature | 68โ75ยฐF | 74โ82ยฐF | โ ๏ธ 74โ75ยฐF (narrow) |
| pH Range | 6.0โ7.5 | 8.1โ8.4 | โ No overlap |
| Temperament | peaceful | semi | โ ๏ธ Monitor |
| Adult Size | 2.6 in | 3.0 in | โ Similar |
| Min. Group | 4+ | 2+ | See below |
| Min. Tank Size | 20 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
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
Percula Clownfish โ Amphiprion percula
The Percula Clownfish, also known as the False Percula, is a popular beginner fish due to its hardiness and striking coloration. These fish are best kept in a saltwater tank with a minimum size of 30 gallons and compatible tankmates. They are peaceful, non-aggressive and do well in groups with other compatible species.
Frequently Asked Questions
Can Hillstream Loach live with Percula Clownfish?
Generally not recommended. Hillstream Loach and Percula Clownfish are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their ranges meet only at 74โ75ยฐF, which leaves no margin for a heater drifting or a warm room. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Hillstream Loach and Percula Clownfish together?
A minimum of 20 gallons is recommended for keeping Hillstream Loach and Percula Clownfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Hillstream Loach and Percula Clownfish?
74โ75ยฐF (narrow) โ inside Hillstream Loach's 68โ75ยฐF and Percula Clownfish's 74โ82ยฐF.
Is a Hillstream Loach aggressive toward a Percula Clownfish?
Hillstream Loach is peaceful and Percula Clownfish is semi. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Hillstream Loach and Percula Clownfish
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. |