Guppy and Silver Arowana Compatibility Overview
Guppy and Silver Arowana 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 | Guppy | Silver Arowana | Verdict |
|---|---|---|---|
| Temperature | 72โ82ยฐF | 68โ86ยฐF | โ 72โ82ยฐF |
| pH Range | 6.8โ8.5 | 5.0โ7.5 | โ ๏ธ 6.8โ7.5 (narrow) |
| Temperament | peaceful | aggressive | โ Risk |
| Adult Size | 2.5 in | 31.5 in | โ 13ร difference |
| Min. Group | 3+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Guppy โ Poecilia reticulata
Hardy and colourful livebearers. Males' long flowing tails make them targets for fin-nipping species. Very prolific breeders.
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.
Frequently Asked Questions
Can Guppy live with Silver Arowana?
Generally not recommended. Guppy and Silver Arowana 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 Guppy and Silver Arowana together?
A minimum of 100 gallons is recommended for keeping Guppy and Silver Arowana together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Guppy and Silver Arowana?
72โ82ยฐF โ inside Guppy's 72โ82ยฐF and Silver Arowana's 68โ86ยฐF.
Is a Guppy aggressive toward a Silver Arowana?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Guppy and Silver Arowana
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. |