Chili Rasbora and Swordtail Compatibility Overview
Chili Rasbora 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 | Chili Rasbora | Swordtail | Verdict |
|---|---|---|---|
| Temperature | 68โ82ยฐF | 65โ80ยฐF | โ 68โ80ยฐF |
| pH Range | 4.0โ7.0 | 7.0โ8.3 | โ ๏ธ 7.0โ7.0 (narrow) |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 0.8 in | 5 in | โ 6ร difference |
| Min. Group | 8+ | 3+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Chili Rasbora โ Boraras brigittae
Vivid red nano fish from Borneo blackwater habitats. Extremely small โ only safe with fish too small to swallow them.
โ Full Chili Rasbora 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 Chili Rasbora live with Swordtail?
With significant caution and a larger tank. Chili Rasbora 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 Chili Rasbora and Swordtail together?
A minimum of 75 gallons is recommended for keeping Chili Rasbora and Swordtail together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Chili Rasbora and Swordtail?
68โ80ยฐF โ inside Chili Rasbora's 68โ82ยฐF and Swordtail's 65โ80ยฐF.
Is a Chili Rasbora aggressive toward a Swordtail?
Chili Rasbora is peaceful and Swordtail is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Chili Rasbora 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. |