Radiata Lionfish – Size L (4″ to 5″)
Pterois radiata
Reef Compatible – With Caution
Care Level – Intermediate
Disposition – Semi-aggressive
Min. Tank Size – 30 gallons
Mature Size – 8 inches
| Specification | Value |
|---|---|
| Species | Pterois radiata |
| Size (Adult) | 8 inches |
| Size (Current) | 4″ to 5″ |
| Compatibility | Reef compatible with caution |
| Difficulty Level | Intermediate |
| Behavior | Semi-aggressive |
| Minimum Tank Size | 30 gallons |
FAQ
Is the Radiata Lionfish safe to keep with other reef fish?
Yes, but with caution. The Radiata Lionfish can be compatible with reef fish, though it may attack smaller or slow-moving species. Monitor interactions closely and avoid housing with very small or delicate invertebrates.
What is the expected growth rate of this lionfish?
The Radiata Lionfish grows to a mature size of 8 inches. At the time of purchase, it is typically between 4 and 5 inches, with a moderate growth rate depending on water conditions and tank size.
Can this fish be kept in a community tank?
It is best suited for a tank with larger, more active fish that can avoid its ambush behavior. It is not recommended for tanks with very small or shy species.

Joanne Newman –
I’ve had my Radiata Lionfish for three months now. It’s active and curious, and it’s not overly aggressive. I keep it in a 30-gallon tank with a few larger fish, and it’s mostly peaceful. I do have to watch it when it’s near smaller shrimp or snails, but overall it’s a good addition to my reef setup.
Alison Nolan –
The fish arrived healthy and was already showing signs of activity. It’s not the most social, but it’s interesting to watch. I’ve noticed it hides in crevices during the day and comes out at night. I’m happy with the size and behavior so far.
Lauren Burgess –
I bought this lionfish for my intermediate reef tank. It’s grown steadily and now reaches about 5 inches. I’ve kept it with a group of tangs and a few corals, and it hasn’t caused any issues as long as I avoid placing it near small invertebrates.