Angelfish and Kuhli Loach Compatibility Overview
Short answer: Yes. Both do well at 74-82°F. Match the tank size and group size in the table below and both should do well.
Angelfish and Kuhli Loach can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Angelfish is semi and Kuhli Loach is peaceful, so give them room and cover rather than assuming they will ignore each other. A minimum 75-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Angelfish | Kuhli Loach | Verdict |
|---|---|---|---|
| Temperature | 74–84°F | 73–82°F | ✅ 74–82°F |
| pH Range | 6.0–7.5 | 5.5–7.0 | ✅ 6.0–7.0 |
| Temperament | semi | peaceful | ⚠️ Monitor |
| Adult Size | 6 in | 3.5 in | ✅ Similar |
| Min. Group | 1+ | 3+ | See below |
| Min. Tank Size | 75 gallons (for both species) | — | |
Compatibility Positives
Caution Points
Species Profiles
Angelfish — Pterophyllum scalare
Elegant South American cichlids with long flowing fins. Generally peaceful but territorial when breeding and will eat very small fish.
Kuhli Loach — Pangio kuhlii
Eel-like bottom dwellers that are peaceful with all non-aggressive fish. Nocturnal and reclusive; need caves and soft substrate.
Frequently Asked Questions
Can Angelfish live with Kuhli Loach?
Yes, in a well-planned setup. Angelfish and Kuhli Loach can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Angelfish is semi and Kuhli Loach is peaceful, so give them room and cover rather than assuming they will ignore each other. A minimum 75-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Angelfish and Kuhli Loach together?
A minimum of 75 gallons is recommended for keeping Angelfish and Kuhli Loach together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Angelfish and Kuhli Loach?
74–82°F — inside Angelfish's 74–84°F and Kuhli Loach's 73–82°F.
Is a Angelfish aggressive toward a Kuhli Loach?
Angelfish is semi and Kuhli Loach is peaceful. No major aggression issues are expected between these species.
More Good Tank Mates for Angelfish and Kuhli Loach
The highest-scoring compatible partners for each species in our compatibility data.
For Angelfish
- Silver Dollar — 90/100
- African Butterfly Fish — 89/100
- Bolivian Ram — 89/100
- Congo Tetra — 88/100
- Moonlight Gourami — 88/100
For Kuhli Loach
- Diamond Tetra — 98/100
- Keyhole Cichlid — 98/100
- Silver Dollar — 98/100
- Dwarf Chain Loach — 96/100
- Black Ruby Barb — 95/100
Related Compatibility Guides
Tank Size for Angelfish and Kuhli 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. |