Chocolate Tang (Yellow Mimic when Juvenile) – XL Size (5″ to 6″)
Acanthurus pyroferus
Reef Compatible: Yes
Care Level: Intermediate
Disposition: Semi-aggressive
Min. Tank Size: 50 gallons
Mature Size: 10 inches
Specifications
| Feature | Detail |
|---|---|
| Species | Acanthurus pyroferus |
| Size (Adult) | Up to 10 inches |
| Size (Juvenile) | 5″ to 6″ |
| Reef Compatibility | Yes |
| Aggression Level | Semi-aggressive |
| Minimum Tank Size | 50 gallons |
FAQ
Is the Chocolate Tang suitable for a reef tank?
Yes, the Chocolate Tang is reef compatible and can coexist with most reef species.
What is the expected size of this fish when it matures?
The mature size of the Chocolate Tang is up to 10 inches.
Is this fish aggressive toward other fish?
The Chocolate Tang is semi-aggressive and may display territorial behavior, especially during feeding or in confined spaces.

Claire Greene –
Bought this Chocolate Tang for my 55-gallon reef tank. It’s been two months and it’s active and healthy. The juvenile coloration is striking, and it’s not overly aggressive. Feeds well on algae wafers and blanched vegetables. Good addition to a balanced reef setup.
Owen May –
The fish arrived quickly and looked vibrant. It’s a bit shy at first but settles into the tank after a week. I appreciate the reef compatibility. Needs a spacious tank, but it’s worth it for the color and activity.
Gabrielle Ross –
This tang has become a centerpiece in my tank. It’s not aggressive with other fish and helps control algae. The yellow mimic phase in juveniles is very noticeable and adds visual interest.