Cherry Barb and Clown Knifefish Compatibility Overview
Cherry Barb and Clown Knifefish are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Cherry Barb is peaceful and Clown Knifefish is aggressive. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Cherry Barb | Clown Knifefish | Verdict |
|---|---|---|---|
| Temperature | 73โ81ยฐF | 68โ82ยฐF | โ 73โ81ยฐF |
| pH Range | 6.0โ8.0 | 6.0โ8.0 | โ 6.0โ8.0 |
| Temperament | peaceful | aggressive | โ Risk |
| Adult Size | 2 in | 39.4 in | โ 20ร difference |
| Min. Group | 6+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Cherry Barb โ Puntius titteya
Unlike most barbs, cherry barbs are peaceful schooling fish safe with bettas and nano species. Males turn vivid red when in breeding condition.
โ Full Cherry Barb 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 Cherry Barb live with Clown Knifefish?
Generally not recommended. Cherry Barb and Clown Knifefish are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Cherry Barb is peaceful and Clown Knifefish is aggressive. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Cherry Barb and Clown Knifefish together?
A minimum of 100 gallons is recommended for keeping Cherry Barb and Clown Knifefish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Cherry Barb and Clown Knifefish?
73โ81ยฐF โ inside Cherry Barb's 73โ81ยฐF and Clown Knifefish's 68โ82ยฐF.
Is a Cherry Barb aggressive toward a Clown Knifefish?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Cherry Barb 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. |