Swordtail and X Ray Tetra Compatibility Overview
Swordtail and X Ray Tetra can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Both species are peaceful, and neither poses a major aggression risk to the other. A minimum 75-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Swordtail | X Ray Tetra | Verdict |
|---|---|---|---|
| Temperature | 65โ80ยฐF | 72โ82ยฐF | โ 72โ80ยฐF |
| pH Range | 7.0โ8.3 | 6.0โ7.5 | โ ๏ธ 7.0โ7.5 (narrow) |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 5 in | 1.8 in | โ ๏ธ 2.8ร difference |
| Min. Group | 3+ | 6+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Swordtail โ Xiphophorus hellerii
Hardy livebearer with a distinctive elongated lower tail fin in males. Peaceful community fish that tolerate a wide temperature range.
X Ray Tetra โ Pristella maxillaris
The Pristella maxillaris, also known as the X-Ray Tetra, is a popular freshwater fish known for its unique appearance and peaceful nature. They are slender and iridescent, with a clear, almost x-ray-like body. They are best kept in groups of 6 or more and thrive in well-planted tanks with a moderate water flow.
Frequently Asked Questions
Can Swordtail live with X Ray Tetra?
Yes, in a well-planned setup. Swordtail and X Ray Tetra can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Both species are peaceful, and neither poses a major aggression risk to the 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 Swordtail and X Ray Tetra together?
A minimum of 75 gallons is recommended for keeping Swordtail and X Ray Tetra together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Swordtail and X Ray Tetra?
72โ80ยฐF โ inside Swordtail's 65โ80ยฐF and X Ray Tetra's 72โ82ยฐF.
Is a Swordtail aggressive toward a X Ray Tetra?
Swordtail is peaceful and X Ray Tetra is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Swordtail and X Ray Tetra
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. |