Black Phantom Tetra and Swordtail Compatibility Overview
Black Phantom Tetra and Swordtail can potentially coexist, but the combination requires careful attention. Their usable pH overlap is narrow and requires stable, tested water. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
| Factor | Black Phantom Tetra | Swordtail | Verdict |
|---|---|---|---|
| Temperature | 68โ82ยฐF | 65โ80ยฐF | โ 68โ80ยฐF |
| pH Range | 5.0โ7.0 | 7.0โ8.3 | โ ๏ธ 7.0โ7.0 (narrow) |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 1.4 in | 5 in | โ ๏ธ 3.6ร difference |
| Min. Group | 8+ | 3+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Black Phantom Tetra โ Hyphessobrycon megalopterus
The Black Phantom Tetra is a popular freshwater fish known for its striking black and silver coloration. It is generally peaceful and can be kept in a community tank with other non-aggressive species. They require a well-maintained tank with a moderate water flow and a good cover of plants.
โ Full Black Phantom Tetra 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 Black Phantom Tetra live with Swordtail?
With significant caution and a larger tank. Black Phantom Tetra and Swordtail can potentially coexist, but the combination requires careful attention. Their usable pH overlap is narrow and requires stable, tested water. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Black Phantom Tetra and Swordtail together?
A minimum of 75 gallons is recommended for keeping Black Phantom Tetra and Swordtail together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Black Phantom Tetra and Swordtail?
68โ80ยฐF โ inside Black Phantom Tetra's 68โ82ยฐF and Swordtail's 65โ80ยฐF.
Is a Black Phantom Tetra aggressive toward a Swordtail?
Black Phantom Tetra is peaceful and Swordtail is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Black Phantom Tetra 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. |