Acanthurus japonicus – Powder Brown Tang
A species of tang known for its vibrant powder brown coloration and active behavior in marine aquariums.
Key Features
- Reef Compatible: Yes
- Care Level: Intermediate
- Disposition: Semi-aggressive
- Minimum Tank Size: 75 gallons
- Mature Size: 8 inches
| Parameter | Value |
|---|---|
| Species | Acanthurus japonicus |
| Size (Adult) | Up to 8 inches |
| Minimum Tank Size | 75 gallons |
| Compatibility | Reef-safe |
| Behavior | Semi-aggressive |
FAQ
Is this tang suitable for a reef tank?
Yes, the Powder Brown Tang is reef compatible and can coexist with coral in a properly maintained reef tank.
What is the recommended tank size for this species?
A minimum tank size of 75 gallons is required to provide adequate space and stability for this tang.
How aggressive is this fish?
The Powder Brown Tang is semi-aggressive and may display territorial behavior, especially during feeding or when space is limited.

Lillian Knox –
The Powder Brown Tang has been a great addition to our 75-gallon reef tank. It’s active and colorful, and it doesn’t damage the corals. We’ve had it for three months and it’s thriving.
Lily Paterson –
It’s a nice-looking fish with a calm demeanor once settled. We noticed it occasionally nips at smaller invertebrates, so we added more hiding spots to reduce stress.
Jan Powell –
Great color and movement. It’s not overly aggressive, and it’s compatible with our live rock setup. Feeding is easy with flakes and spirulina.