Cephalopholis polleni
Reef Compatible – With Caution
Care Level – Intermediate
Disposition – Aggressive
Min. Tank Size – 100 gallons
Mature Size – 17 inches
Specifications
| Feature | Value |
|---|---|
| Scientific Name | Cephalopholis polleni |
| Size (Minimum) | 8 inches |
| Size (Mature) | 17 inches |
| Tank Size Requirement | 100 gallons |
| Compatibility | Reef compatible with caution |
| Behavior | Aggressive |
FAQ
Is this fish suitable for a reef tank?
This fish is reef compatible with caution. It may attack or damage soft corals and anemones, so careful monitoring and proper tank setup are required.
What is the recommended tank size for this species?
A minimum tank size of 100 gallons is required to provide adequate space and stability for this aggressive fish.
How big does this fish grow?
The mature size of this fish is up to 17 inches. It typically reaches 8 inches at a young age.


Liam Wilson –
I bought this grouper for my 120-gallon reef tank. It’s quite large and active, and I had to remove some delicate corals to avoid damage. It’s aggressive but fascinating to watch. Needs a spacious setup and careful management.
Dylan Marshall –
The fish arrived healthy and was placed in my 100-gallon tank. It’s not shy about asserting dominance, especially around smaller fish. I’ve had to adjust my tank layout to reduce stress on other inhabitants.
Sean Gill –
After a few weeks, I noticed it’s very territorial. I made sure to keep it away from shrimp and small invertebrates. It’s a striking fish and adds a lot of visual interest despite the challenges.