Chili Rasbora and Guppy Compatibility Overview
Chili Rasbora and Guppy can potentially coexist, but the combination requires careful attention. Their usable pH overlap is narrow and requires stable, tested water. A larger tank (minimum 20 gallons), dense planting, and close monitoring are essential.
| Factor | Chili Rasbora | Guppy | Verdict |
|---|---|---|---|
| Temperature | 68โ82ยฐF | 72โ82ยฐF | โ 72โ82ยฐF |
| pH Range | 4.0โ7.0 | 6.8โ8.5 | โ ๏ธ 6.8โ7.0 (narrow) |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 0.8 in | 2.5 in | โ ๏ธ 3.1ร difference |
| Min. Group | 8+ | 3+ | See below |
| Min. Tank Size | 20 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
Guppy โ Poecilia reticulata
Hardy and colourful livebearers. Males' long flowing tails make them targets for fin-nipping species. Very prolific breeders.
Frequently Asked Questions
Can Chili Rasbora live with Guppy?
With significant caution and a larger tank. Chili Rasbora and Guppy can potentially coexist, but the combination requires careful attention. Their usable pH overlap is narrow and requires stable, tested water. A larger tank (minimum 20 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Chili Rasbora and Guppy together?
A minimum of 20 gallons is recommended for keeping Chili Rasbora and Guppy together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Chili Rasbora and Guppy?
72โ82ยฐF โ inside Chili Rasbora's 68โ82ยฐF and Guppy's 72โ82ยฐF.
Is a Chili Rasbora aggressive toward a Guppy?
Chili Rasbora is peaceful and Guppy is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Chili Rasbora and Guppy
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 20 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 29 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 55 gal | Best when keeping larger schools or reducing territorial pressure. |