Radiata Lionfish – XXL Size (6″ to 7″)
Pterois radiata
Reef Compatible – With Caution
Care Level – Intermediate
Disposition – Semi-aggressive
Min. Tank Size – 30 gallons
Mature Size – 8 inches
| Specification | Detail |
|---|---|
| Species | Pterois radiata |
| Size (Adult) | Up to 8 inches |
| Minimum Tank Size | 30 gallons |
| Compatibility | Reef compatible with caution |
| Aggression Level | Semi-aggressive |
| Difficulty Level | Intermediate |
FAQ
Is the Radiata Lionfish safe to keep with other reef fish?
It is reef compatible with caution. Some species may be targeted due to its venomous spines. Monitor closely when introducing to a reef tank.
What is the expected mature size of this lionfish?
The mature size is up to 8 inches, though this specimen is listed as XXL and grows between 6″ to 7″.
What tank size is recommended for this fish?
A minimum tank size of 30 gallons is required to provide adequate space and stability.

Neil Reid –
Bought this lionfish for my 40-gallon reef tank. It’s active but not overly aggressive. I’ve noticed it avoids other fish and stays near the back wall. The coloration is vibrant and it looks healthy after a few weeks. Only issue is it needs a bit of space and a hiding spot.
Jake Campbell –
The fish arrived quickly and looks well-packaged. It’s semi-aggressive, so I made sure to keep it in a tank with plenty of live rock and open space. It’s not attacking other fish, just curious. Good for intermediate reef keepers.
Piers Edmunds –
I’ve kept lionfish before, but this one is more active and colorful. It’s not a threat to corals, but I keep an eye on it when new fish are added. Feeding is easy with frozen shrimp. Overall, a solid addition to a balanced tank.