Angelfish and Hillstream Loach Compatibility Overview
Angelfish and Hillstream Loach 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. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
| Factor | Angelfish | Hillstream Loach | Verdict |
|---|---|---|---|
| Temperature | 74โ84ยฐF | 68โ75ยฐF | โ ๏ธ 74โ75ยฐF (narrow) |
| pH Range | 6.0โ7.5 | 6.0โ7.5 | โ 6.0โ7.5 |
| Temperament | semi | peaceful | โ ๏ธ Monitor |
| Adult Size | 6 in | 2.6 in | โ ๏ธ 2.3ร difference |
| Min. Group | 1+ | 4+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Angelfish โ Pterophyllum scalare
Elegant South American cichlids with long flowing fins. Generally peaceful but territorial when breeding and will eat very small fish.
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.
Frequently Asked Questions
Can Angelfish live with Hillstream Loach?
With significant caution and a larger tank. Angelfish and Hillstream Loach 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. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Angelfish and Hillstream Loach together?
A minimum of 75 gallons is recommended for keeping Angelfish and Hillstream Loach together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Angelfish and Hillstream Loach?
74โ75ยฐF (narrow) โ inside Angelfish's 74โ84ยฐF and Hillstream Loach's 68โ75ยฐF.
Is a Angelfish aggressive toward a Hillstream Loach?
Angelfish is semi and Hillstream Loach is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Angelfish and Hillstream Loach
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 75 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 125 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 150 gal | Best when keeping larger schools or reducing territorial pressure. |