Clown Knifefish and Diamond Tetra Compatibility Overview
Clown Knifefish and Diamond Tetra 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 | Clown Knifefish | Diamond Tetra | Verdict |
|---|---|---|---|
| Temperature | 68โ82ยฐF | 75โ82ยฐF | โ 75โ82ยฐF |
| pH Range | 6.0โ8.0 | 5.5โ7.0 | โ 6.0โ7.0 |
| Temperament | aggressive | peaceful | โ Risk |
| Adult Size | 39.4 in | 2.4 in | โ 16ร difference |
| Min. Group | 1+ | 6+ | 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
Diamond Tetra โ Moenkhausia pittieri
The Diamond Tetra is a popular freshwater fish known for its vibrant colors and peaceful nature. It is well-suited for community tanks and can thrive in a variety of water conditions. With a moderate activity level and a preference for schools, this species is a great addition to any beginner or intermediate aquarist's tank.
Frequently Asked Questions
Can Clown Knifefish live with Diamond Tetra?
Generally not recommended. Clown Knifefish and Diamond Tetra 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 Clown Knifefish and Diamond Tetra together?
A minimum of 100 gallons is recommended for keeping Clown Knifefish and Diamond Tetra together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Clown Knifefish and Diamond Tetra?
75โ82ยฐF โ inside Clown Knifefish's 68โ82ยฐF and Diamond Tetra's 75โ82ยฐF.
Is a Clown Knifefish aggressive toward a Diamond Tetra?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Clown Knifefish and Diamond Tetra
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. |