Chocolate Boenak Grouper
Cephalopholis argus
Reef Compatible – With Caution
Care Level – Intermediate
Disposition – Aggressive
Min. Tank Size – 100 gallons
Mature Size – 24 inches
Size Range
| Size | Range |
|---|---|
| L | 4″ to 5″ |
FAQ
Is the Chocolate Boenak Grouper safe to keep with other reef fish?
Only with caution. It may attack smaller or slower-moving species. Avoid keeping with delicate or small reef fish.
What is the recommended tank size for this fish?
A minimum of 100 gallons is required to provide adequate space and stability.
How aggressive is this fish in a community tank?
It is considered aggressive and may dominate or harm other fish, especially those of similar size or slow movement.


Edward Campbell –
Bought this grouper for a 120-gallon reef tank. It’s active and territorial, so I removed several small fish. It’s not for beginners. Feeds well on frozen shrimp and squid. Needs a large tank and careful planning.
Christopher Sharp –
Placed in a 100-gallon tank with a few larger fish. It showed aggression toward a small tang. I’ve had to monitor interactions closely. Feeding is straightforward, but it requires space and stability.
Rose McDonald –
After a few months, it’s grown steadily and shows no signs of stress. I keep it separate from small species. It’s a strong, healthy fish with good coloration. Only suitable for experienced aquarists.