Gem Tang (Zebrasoma gemmatum)
Reef compatible: Yes
Care level: Intermediate
Disposition: Semi-aggressive
Minimum tank size: 200 gallons
Mature size: 8.5 inches
Specifications
| Feature | Value |
|---|---|
| Species | Zebrasoma gemmatum |
| Size (Adult) | 8.5 inches |
| Minimum Tank Size | 200 gallons |
| Reef Compatibility | Yes |
| Behavior | Semi-aggressive |
| Difficulty Level | Intermediate |
FAQ
Is the Gem Tang suitable for a reef tank?
Yes, the Gem Tang is reef compatible and can coexist with reef fish in a properly maintained tank.
What is the recommended tank size for a Gem Tang?
A minimum tank size of 200 gallons is required to provide adequate space and stability for the Gem Tang.
How aggressive is the Gem Tang?
The Gem Tang is semi-aggressive and may display territorial behavior, especially during feeding or when stressed.



Nicholas May –
I’ve had my Gem Tang for six months now. It’s active and colorful, and it doesn’t seem to harm the other fish in the tank. The tank is 220 gallons, which is above the minimum requirement. It’s a bit territorial at times, but manageable with proper tank setup and spacing.
Anne Ball –
The Gem Tang looks great and adds a lot of visual interest. I noticed it gets more active during feeding. I keep a good mix of fish, and it hasn’t caused any issues so far. Needs a large tank, but worth it for the appearance.
Dylan Dowd –
It’s a decent addition to a reef tank. I’m not sure how it handles other tangs or similar species. It’s active and shows off its colors well, but I’ve seen it chase smaller fish occasionally.