Fire Eel and Silver Arowana Compatibility Overview
Fire Eel and Silver Arowana can potentially coexist, but the combination requires careful attention. Fire Eel is semi and Silver Arowana is aggressive. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely. A larger tank (minimum 100 gallons), dense planting, and close monitoring are essential.
| Factor | Fire Eel | Silver Arowana | Verdict |
|---|---|---|---|
| Temperature | 75โ82ยฐF | 68โ86ยฐF | โ 75โ82ยฐF |
| pH Range | 6.0โ7.0 | 5.0โ7.5 | โ 6.0โ7.0 |
| Temperament | semi | aggressive | โ Risk |
| Adult Size | 39.4 in | 31.5 in | โ Similar |
| Min. Group | 1+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Fire Eel โ Mastacembelus erythrotaenia
The Fire Eel is a stunning, red-bottomed species that requires a spacious tank. They are peaceful bottom feeders and do best in a well-planted, mature aquarium. With a moderate activity level, they can be a great addition to a community tank, but their size and diet may be incompatible with smaller fish.
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 Fire Eel live with Silver Arowana?
With significant caution and a larger tank. Fire Eel and Silver Arowana can potentially coexist, but the combination requires careful attention. Fire Eel is semi and Silver Arowana is aggressive. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely. A larger tank (minimum 100 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Fire Eel and Silver Arowana together?
A minimum of 100 gallons is recommended for keeping Fire Eel and Silver Arowana together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Fire Eel and Silver Arowana?
75โ82ยฐF โ inside Fire Eel's 75โ82ยฐF and Silver Arowana's 68โ86ยฐF.
Is a Fire Eel aggressive toward a Silver Arowana?
Fire Eel is semi and Silver Arowana is aggressive. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely.
Related Compatibility Guides
Tank Size for Fire Eel 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. |