Silver Arowana and X Ray Tetra Compatibility Overview
Silver Arowana and X Ray Tetra are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Silver Arowana is aggressive and X Ray Tetra is peaceful. 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 | Silver Arowana | X Ray Tetra | Verdict |
|---|---|---|---|
| Temperature | 68โ86ยฐF | 72โ82ยฐF | โ 72โ82ยฐF |
| pH Range | 5.0โ7.5 | 6.0โ7.5 | โ 6.0โ7.5 |
| Temperament | aggressive | peaceful | โ Risk |
| Adult Size | 31.5 in | 1.8 in | โ 18ร difference |
| Min. Group | 1+ | 6+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Silver Arowana โ Osteoglossum bicirrhosum
The Silver Arowana is a majestic and unique fish known for its striking appearance and size. It is a large, predatory fish that requires a spacious tank and specific water conditions. While not a community fish, it can be kept with compatible, larger species. They are sensitive to stress and require careful water quality management.
โ Full Silver Arowana care guide
X Ray Tetra โ Pristella maxillaris
The Pristella maxillaris, also known as the X-Ray Tetra, is a popular freshwater fish known for its unique appearance and peaceful nature. They are slender and iridescent, with a clear, almost x-ray-like body. They are best kept in groups of 6 or more and thrive in well-planted tanks with a moderate water flow.
Frequently Asked Questions
Can Silver Arowana live with X Ray Tetra?
Generally not recommended. Silver Arowana and X Ray Tetra are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Silver Arowana is aggressive and X Ray Tetra is peaceful. 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 Silver Arowana and X Ray Tetra together?
A minimum of 100 gallons is recommended for keeping Silver Arowana and X Ray Tetra together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Silver Arowana and X Ray Tetra?
72โ82ยฐF โ inside Silver Arowana's 68โ86ยฐF and X Ray Tetra's 72โ82ยฐF.
Is a Silver Arowana aggressive toward a X Ray Tetra?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Silver Arowana and X Ray Tetra
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 250 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 350 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 450 gal | Best when keeping larger schools or reducing territorial pressure. |