Glass Catfish and Lionfish Compatibility Overview
Glass Catfish and Lionfish are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Glass Catfish | Lionfish | Verdict |
|---|---|---|---|
| Temperature | 68โ79ยฐF | 72โ82ยฐF | โ 72โ79ยฐF |
| pH Range | 4.0โ7.0 | 8.1โ8.4 | โ No overlap |
| Temperament | peaceful | aggressive | โ Risk |
| Adult Size | 2.6 in | 15.0 in | โ 6ร 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
Lionfish โ Pterois volitans
Lionfish are popular saltwater aquarium fish known for their striking colors and intimidating spines. These fish require a large tank and careful attention to water parameters. Aggressive by nature, they can be harmful to smaller fish and invertebrates.
Frequently Asked Questions
Can Glass Catfish live with Lionfish?
Generally not recommended. Glass Catfish and Lionfish are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Glass Catfish and Lionfish together?
A minimum of 100 gallons is recommended for keeping Glass Catfish and Lionfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Glass Catfish and Lionfish?
72โ79ยฐF โ inside Glass Catfish's 68โ79ยฐF and Lionfish's 72โ82ยฐF.
Is a Glass Catfish aggressive toward a Lionfish?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Glass Catfish and Lionfish
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 120 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 180 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 220 gal | Best when keeping larger schools or reducing territorial pressure. |