Glass Catfish and Silver Arowana Compatibility Overview
Glass Catfish and Silver Arowana are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Glass Catfish 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 | Glass Catfish | Silver Arowana | Verdict |
|---|---|---|---|
| Temperature | 68โ79ยฐF | 68โ86ยฐF | โ 68โ79ยฐF |
| pH Range | 4.0โ7.0 | 5.0โ7.5 | โ 5.0โ7.0 |
| Temperament | peaceful | aggressive | โ Risk |
| Adult Size | 2.6 in | 31.5 in | โ 12ร difference |
| Min. Group | 6+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Glass Catfish โ Kryptopterus vitreolus
The Glass Catfish, Kryptopterus vitreolus, is a popular freshwater aquarium fish known for its unique, translucent body and iridescent scales. It is a peaceful species that thrives in groups and is suitable for beginners due to its hardy nature. These catfish are bottom-dwellers and require a well-decorated tank with plenty of swimming space.
โ Full Glass Catfish 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 Glass Catfish live with Silver Arowana?
Generally not recommended. Glass Catfish and Silver Arowana are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Glass Catfish 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 Glass Catfish and Silver Arowana together?
A minimum of 100 gallons is recommended for keeping Glass Catfish and Silver Arowana together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Glass Catfish and Silver Arowana?
68โ79ยฐF โ inside Glass Catfish's 68โ79ยฐF and Silver Arowana's 68โ86ยฐF.
Is a Glass Catfish aggressive toward a Silver Arowana?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Glass Catfish 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. |