Argus Grouper Med – Cephalopholis argus
Minimum Tank Size: 130 gallons
Care Level: Moderate
Temperament: Aggressive
Reef Compatible: With Caution
Water Conditions: 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.020-1.025
Max. Size: 1′ 2″
Color Form: Blue, Orange, Yellow
Diet: Carnivore
| Size | Range |
|---|---|
| Each | 3″ – 5″ |
FAQ
Is the Argus Grouper suitable for a reef tank?
With caution. It may attack other fish and is not recommended for tanks with small or slow-moving species.
What is the ideal water temperature for Argus Grouper?
72-78° F
What kind of diet does this fish require?
Carnivore diet; feed high-protein foods such as shrimp, squid, and fish pellets.

John Parr –
The Argus Grouper arrived alive and active. It’s quite aggressive and needs a large tank. I have a 130-gallon tank and it’s been adjusting well. The coloration is vibrant, especially the orange and yellow patches. Requires careful placement to avoid conflicts with other fish.
Kimberly Young –
This fish is a striking addition to the tank. I noticed it’s more active than expected and needs consistent feeding. Water parameters are stable, and it’s adapted well to the conditions. I keep it in a spacious tank with plenty of hiding spots.
Andrea MacLeod –
It’s aggressive and not suitable for a small or mixed community tank. I had to reposition some fish to avoid stress. The color is bright, but it’s not a good fit for reef tanks with delicate corals.