Acanthurus Tristis – Mimic Tang
Reef compatible: Yes
Care level: Intermediate
Disposition: Semi-aggressive
Minimum tank size: 75 gallons
Mature size: 10 inches
Specifications
| Feature | Value |
|---|---|
| Species | Acanthurus Tristis |
| Size (L) | 3″ to 4″ |
| Reef Compatible | Yes |
| Difficulty Level | Intermediate |
| Behavior | Semi-aggressive |
| Minimum Tank Size | 75 gallons |
| Mature Size | 10 inches |
FAQ
Is this tang suitable for a reef tank?
Yes, Acanthurus Tristis is reef compatible and can coexist with coral in a properly maintained reef environment.
What is the expected mature size of this fish?
The mature size of this tang is approximately 10 inches.
What tank size is required for this species?
A minimum tank size of 75 gallons is recommended for proper growth and behavior.

Jacob White –
The Mimic Tang has been a great addition to our 80-gallon reef tank. It’s active and doesn’t damage corals. We’ve had it for three months and it’s thriving. Feeding is straightforward with a mix of algae wafers and spirulina.
Gavin Poole –
This tang is semi-aggressive as described and stays within the tank without causing issues. We’re happy with the coloration and movement. Needs a stable environment and regular feeding.
Alexandra Smith –
We added this fish to our 75-gallon tank and it has adapted well. It’s not overly aggressive and doesn’t chase other fish. Good for intermediate reef keepers looking for a hardy tang.