Angelfish and Swordtail Compatibility Overview
Angelfish and Swordtail can potentially coexist, but the combination requires careful attention. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
| Factor | Angelfish | Swordtail | Verdict |
|---|---|---|---|
| Temperature | 74โ84ยฐF | 65โ80ยฐF | โ 74โ80ยฐF |
| pH Range | 6.0โ7.5 | 7.0โ8.3 | โ ๏ธ 7.0โ7.5 (narrow) |
| Temperament | semi | peaceful | โ ๏ธ Monitor |
| Adult Size | 6 in | 5 in | โ Similar |
| Min. Group | 1+ | 3+ | 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.
Swordtail โ Xiphophorus hellerii
Hardy livebearer with a distinctive elongated lower tail fin in males. Peaceful community fish that tolerate a wide temperature range.
Frequently Asked Questions
Can Angelfish live with Swordtail?
With significant caution and a larger tank. Angelfish and Swordtail can potentially coexist, but the combination requires careful attention. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Angelfish and Swordtail together?
A minimum of 75 gallons is recommended for keeping Angelfish and Swordtail together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Angelfish and Swordtail?
74โ80ยฐF โ inside Angelfish's 74โ84ยฐF and Swordtail's 65โ80ยฐF.
Is a Angelfish aggressive toward a Swordtail?
Angelfish is semi and Swordtail is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Angelfish and Swordtail
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. |