Silver Arowana and Zebra Danio Compatibility Overview
Silver Arowana and Zebra Danio 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 | Silver Arowana | Zebra Danio | Verdict |
|---|---|---|---|
| Temperature | 68โ86ยฐF | 64โ82ยฐF | โ 68โ82ยฐF |
| pH Range | 5.0โ7.5 | 6.5โ8.0 | โ 6.5โ7.5 |
| Temperament | aggressive | peaceful | โ Risk |
| Adult Size | 31.5 in | 2 in | โ 16ร difference |
| Min. Group | 1+ | 5+ | 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
Zebra Danio โ Danio rerio
Extremely hardy, fast-moving schooling fish tolerant of a wide temperature range. Active top-to-mid swimmers compatible with most community fish.
Frequently Asked Questions
Can Silver Arowana live with Zebra Danio?
Generally not recommended. Silver Arowana and Zebra Danio 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 Silver Arowana and Zebra Danio together?
A minimum of 100 gallons is recommended for keeping Silver Arowana and Zebra Danio together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Silver Arowana and Zebra Danio?
68โ82ยฐF โ inside Silver Arowana's 68โ86ยฐF and Zebra Danio's 64โ82ยฐF.
Is a Silver Arowana aggressive toward a Zebra Danio?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Silver Arowana and Zebra Danio
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. |