Betta Fish and Silver Arowana Compatibility Overview
Betta Fish and Silver Arowana are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Betta Fish and Silver Arowana are both aggressive; housing them together invites sustained fighting rather than an occasional squabble. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Betta Fish | Silver Arowana | Verdict |
|---|---|---|---|
| Temperature | 76โ82ยฐF | 68โ86ยฐF | โ 76โ82ยฐF |
| pH Range | 6.5โ7.5 | 5.0โ7.5 | โ 6.5โ7.5 |
| Temperament | aggressive | aggressive | โ Risk |
| Adult Size | 3 in | 31.5 in | โ 10ร difference |
| Min. Group | 1+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Betta Fish โ Betta splendens
Vibrant labyrinth fish from Southeast Asia. Males are highly territorial toward other bettas and fin-nippers; compatible with many peaceful species in large, planted tanks.
โ Full Betta Fish care guide
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 Betta Fish live with Silver Arowana?
Generally not recommended. Betta Fish and Silver Arowana are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Betta Fish and Silver Arowana are both aggressive; housing them together invites sustained fighting rather than an occasional squabble. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Betta Fish and Silver Arowana together?
A minimum of 100 gallons is recommended for keeping Betta Fish and Silver Arowana together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Betta Fish and Silver Arowana?
76โ82ยฐF โ inside Betta Fish's 76โ82ยฐF and Silver Arowana's 68โ86ยฐF.
Is a Betta Fish aggressive toward a Silver Arowana?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Betta Fish 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. |