Acanthurus nigricans – Gold Rim Tang
Reef compatible: Yes
Care level: Intermediate
Disposition: Semi-aggressive
Minimum tank size: 75 gallons
Mature size: 8 inches
Specifications
| Feature | Value |
|---|---|
| Size (Adult) | 8 inches |
| Minimum Tank Size | 75 gallons |
| Reef Compatibility | Yes |
| Difficulty Level | Intermediate |
| Behavior | Semi-aggressive |
FAQ
What is the typical adult size of this fish?
The mature size of the Acanthurus nigricans is 8 inches.
Is this fish suitable for a reef tank?
Yes, this fish is reef compatible.
What is the recommended tank size for keeping this fish?
A minimum tank size of 75 gallons is required.


Ryan Hamilton –
The Gold Rim Tang is a striking addition to my 100-gallon reef tank. It’s active and colorful, and it doesn’t damage the corals. I’ve had it for six months and it’s thriving. Feeding is straightforward with a mix of algae wafers and frozen foods.
Steven Sutherland –
This tang is semi-aggressive as expected, but it doesn’t become overly territorial. I keep it with a few other peaceful fish, and it coexists well. The fish is active and helps keep the tank clean by grazing on algae.
Elizabeth McGrath –
Great choice for intermediate reef keepers. It’s hardy and grows steadily. I noticed it’s more active in the morning and evening. Feeding twice a day with a variety of foods keeps it healthy and vibrant.