Clown Knifefish and Percula Clownfish Compatibility Overview
Clown Knifefish and Percula Clownfish are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Clown Knifefish | Percula Clownfish | Verdict |
|---|---|---|---|
| Temperature | 68โ82ยฐF | 74โ82ยฐF | โ 74โ82ยฐF |
| pH Range | 6.0โ8.0 | 8.1โ8.4 | โ No overlap |
| Temperament | aggressive | semi | โ Risk |
| Adult Size | 39.4 in | 3.0 in | โ 13ร difference |
| Min. Group | 1+ | 2+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
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.
โ Full Clown Knifefish care guide
Percula Clownfish โ Amphiprion percula
The Percula Clownfish, also known as the False Percula, is a popular beginner fish due to its hardiness and striking coloration. These fish are best kept in a saltwater tank with a minimum size of 30 gallons and compatible tankmates. They are peaceful, non-aggressive and do well in groups with other compatible species.
Frequently Asked Questions
Can Clown Knifefish live with Percula Clownfish?
Generally not recommended. Clown Knifefish and Percula Clownfish are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Clown Knifefish and Percula Clownfish together?
A minimum of 100 gallons is recommended for keeping Clown Knifefish and Percula Clownfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Clown Knifefish and Percula Clownfish?
74โ82ยฐF โ inside Clown Knifefish's 68โ82ยฐF and Percula Clownfish's 74โ82ยฐF.
Is a Clown Knifefish aggressive toward a Percula Clownfish?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Clown Knifefish and Percula Clownfish
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. |