Black Neon Tetra and Swordtail Compatibility Overview
Black Neon Tetra 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 | Black Neon Tetra | Swordtail | Verdict |
|---|---|---|---|
| Temperature | 68โ82ยฐF | 65โ80ยฐF | โ 68โ80ยฐF |
| pH Range | 5.0โ7.5 | 7.0โ8.3 | โ ๏ธ 7.0โ7.5 (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 Neon Tetra โ Hyphessobrycon herbertaxelrodi
The Black Neon Tetra is a popular freshwater species known for its vibrant colors and peaceful temperament. It is an excellent addition to community tanks, thriving in groups of 6 or more. These tetras require a well-maintained aquarium with a flowing current and plenty of swimming space. With proper care, they can live up to 5 years.
โ Full Black Neon 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 Neon Tetra live with Swordtail?
With significant caution and a larger tank. Black Neon Tetra 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 Black Neon Tetra and Swordtail together?
A minimum of 75 gallons is recommended for keeping Black Neon Tetra and Swordtail together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Black Neon Tetra and Swordtail?
68โ80ยฐF โ inside Black Neon Tetra's 68โ82ยฐF and Swordtail's 65โ80ยฐF.
Is a Black Neon Tetra aggressive toward a Swordtail?
Black Neon Tetra is peaceful and Swordtail is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Black Neon 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. |