Moonlight Gourami and Swordtail Compatibility Overview
Moonlight Gourami 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 75 gallons), dense planting, and close monitoring are essential.
| Factor | Moonlight Gourami | 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 | 5.9 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
Moonlight Gourami โ Trichopodus microlepis
The Moonlight Gourami is a beautiful freshwater fish known for its silvery blue color and red eyes. It is a peaceful community fish suitable for beginners and can thrive in a well-maintained aquarium. These fish are sensitive to water quality and require a spacious tank with plenty of swimming space.
โ Full Moonlight Gourami 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 Moonlight Gourami live with Swordtail?
With significant caution and a larger tank. Moonlight Gourami 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 75 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Moonlight Gourami and Swordtail together?
A minimum of 75 gallons is recommended for keeping Moonlight Gourami and Swordtail together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Moonlight Gourami and Swordtail?
77โ80ยฐF (narrow) โ inside Moonlight Gourami's 77โ86ยฐF and Swordtail's 65โ80ยฐF.
Is a Moonlight Gourami aggressive toward a Swordtail?
Moonlight Gourami is peaceful and Swordtail is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Moonlight Gourami 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. |