Moonlight Gourami and Silver Arowana Compatibility Overview
Moonlight Gourami and Silver Arowana are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Moonlight Gourami is peaceful and Silver Arowana is aggressive. 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 | Moonlight Gourami | Silver Arowana | Verdict |
|---|---|---|---|
| Temperature | 77โ86ยฐF | 68โ86ยฐF | โ 77โ86ยฐF |
| pH Range | 6.0โ7.5 | 5.0โ7.5 | โ 6.0โ7.5 |
| Temperament | peaceful | aggressive | โ Risk |
| Adult Size | 5.9 in | 31.5 in | โ 5ร difference |
| Min. Group | 1+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Moonlight Gourami โ Trichopodus microlepis
The Moonlight Gourami is a beautiful freshwater fish known for its silvery blue color and red eyes. It is a peaceful community fish suitable for beginners and can thrive in a well-maintained aquarium. These fish are sensitive to water quality and require a spacious tank with plenty of swimming space.
โ Full Moonlight Gourami 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 Moonlight Gourami live with Silver Arowana?
Generally not recommended. Moonlight Gourami and Silver Arowana are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Moonlight Gourami is peaceful and Silver Arowana is aggressive. 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 Moonlight Gourami and Silver Arowana together?
A minimum of 100 gallons is recommended for keeping Moonlight Gourami and Silver Arowana together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Moonlight Gourami and Silver Arowana?
77โ86ยฐF โ inside Moonlight Gourami's 77โ86ยฐF and Silver Arowana's 68โ86ยฐF.
Is a Moonlight Gourami aggressive toward a Silver Arowana?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Moonlight Gourami 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. |