Chili Rasbora and Clown Knifefish Compatibility Overview
Chili Rasbora and Clown Knifefish are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Chili Rasbora | Clown Knifefish | Verdict |
|---|---|---|---|
| Temperature | 68โ82ยฐF | 68โ82ยฐF | โ 68โ82ยฐF |
| pH Range | 4.0โ7.0 | 6.0โ8.0 | โ 6.0โ7.0 |
| Temperament | peaceful | aggressive | โ Risk |
| Adult Size | 0.8 in | 39.4 in | โ 49ร difference |
| Min. Group | 8+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
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
Clown Knifefish โ Chitala ornata
The Clown Knifefish is a unique and visually striking species known for its slender body and distinctive coloration. It is a solitary fish that requires a spacious tank to thrive. With a moderate activity level and low aggression, it can be a suitable addition to a community tank with similarly peaceful species.
Frequently Asked Questions
Can Chili Rasbora live with Clown Knifefish?
Generally not recommended. Chili Rasbora and Clown Knifefish are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Chili Rasbora and Clown Knifefish together?
A minimum of 100 gallons is recommended for keeping Chili Rasbora and Clown Knifefish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Chili Rasbora and Clown Knifefish?
68โ82ยฐF โ inside Chili Rasbora's 68โ82ยฐF and Clown Knifefish's 68โ82ยฐF.
Is a Chili Rasbora aggressive toward a Clown Knifefish?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Chili Rasbora and Clown Knifefish
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 300 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 450 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 550 gal | Best when keeping larger schools or reducing territorial pressure. |