Clown Loach and Swordtail Compatibility Overview
Clown Loach and Swordtail can potentially coexist, but the combination requires careful attention. Their preferred temperature ranges have little safe overlap. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. A larger tank (minimum 100 gallons), dense planting, and close monitoring are essential.
| Factor | Clown Loach | Swordtail | Verdict |
|---|---|---|---|
| Temperature | 77โ86ยฐF | 65โ80ยฐF | โ ๏ธ 77โ80ยฐF (narrow) |
| pH Range | 6.0โ7.5 | 7.0โ8.3 | โ ๏ธ 7.0โ7.5 (narrow) |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 12 in | 5 in | โ ๏ธ 2.4ร difference |
| Min. Group | 5+ | 3+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Clown Loach โ Chromobotia macracanthus
Striking striped loach that grows very large. Peaceful with fish but will eat shrimp, snails and tiny fish.
โ Full Clown Loach care guide
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 Clown Loach live with Swordtail?
With significant caution and a larger tank. Clown Loach and Swordtail can potentially coexist, but the combination requires careful attention. Their preferred temperature ranges have little safe overlap. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. A larger tank (minimum 100 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Clown Loach and Swordtail together?
A minimum of 100 gallons is recommended for keeping Clown Loach and Swordtail together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Clown Loach and Swordtail?
77โ80ยฐF (narrow) โ inside Clown Loach's 77โ86ยฐF and Swordtail's 65โ80ยฐF.
Is a Clown Loach aggressive toward a Swordtail?
Clown Loach is peaceful and Swordtail is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Clown Loach and Swordtail
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 100 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 150 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 220 gal | Best when keeping larger schools or reducing territorial pressure. |