Koi and Percula Clownfish Compatibility Overview
Koi 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 | Koi | Percula Clownfish | Verdict |
|---|---|---|---|
| Temperature | 50โ75ยฐF | 74โ82ยฐF | โ ๏ธ 74โ75ยฐF (narrow) |
| pH Range | 7.0โ8.5 | 8.1โ8.4 | โ ๏ธ 8.1โ8.4 (narrow) |
| Temperament | peaceful | semi | โ ๏ธ Monitor |
| Adult Size | 24 in | 3.0 in | โ 8ร difference |
| Min. Group | 2+ | 2+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Koi โ Cyprinus rubrofuscus
Large pond fish that require hundreds of gallons and cool water. Will eat any fish small enough to fit in their mouth.
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 Koi live with Percula Clownfish?
Generally not recommended. Koi 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 Koi and Percula Clownfish together?
A minimum of 100 gallons is recommended for keeping Koi and Percula Clownfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Koi and Percula Clownfish?
74โ75ยฐF (narrow) โ inside Koi's 50โ75ยฐF and Percula Clownfish's 74โ82ยฐF.
Is a Koi aggressive toward a Percula Clownfish?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Koi 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 | 100 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 150 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 180 gal | Best when keeping larger schools or reducing territorial pressure. |