Gem Tang (Zebrasoma gemmatum)
Please Note: Due to variations within species, your item may not look identical to the image provided. Approximate size range may also vary between individual specimen.
Quick Stats
| Moderate | |
| Semi-aggressive | |
| Black, White, Yellow | |
| Herbivore | |
| Yes | |
| sg 1.020-1.025, 72-78° F, dKH 8-12, pH 8.1-8.4 | |
| 9″ | |
| Acanthuridae | |
| 180 gallons |
Overview
Did you know that this specimen ships from our LiveAquaria® Wisconsin Facility, home of our popular marine fish breeding program. The Gem Tang is a hardy, colorful tang known for its striking black, white, and yellow patterns. It thrives in well-maintained marine tanks with ample space and a stable environment. As a herbivore, it prefers a diet of algae and plant matter. This species is moderately active and semi-aggressive, so it should be kept with compatible tank mates in a large aquarium.
FAQ
What is the ideal tank size for a Gem Tang?
The Gem Tang requires a minimum of 180 gallons to thrive due to its active nature and space needs.
What kind of diet does the Gem Tang prefer?
The Gem Tang is a herbivore and prefers a diet of algae, marine plants, and algae wafers.
Is the Gem Tang suitable for beginner aquarists?
The Gem Tang is best suited for experienced aquarists due to its moderate to semi-aggressive behavior and specific water parameter requirements.

Paul Skinner –
Received the Gem Tang in good condition. It was active and showed vibrant coloration. The tank setup is stable and the fish has adapted well after a week. Water parameters are within recommended range. Would recommend for experienced marine fish keepers.
Joshua MacDonald –
The fish arrived healthy and looks quite colorful. It’s a bit active and needs a large tank. I’ve maintained stable water conditions and it’s eating algae well. Slightly more aggressive than expected with other tangs, but manageable in a 180-gallon tank.
Elizabeth Peters –
Great quality fish from the Wisconsin facility. The coloration is vivid and the fish is calm in its tank. It’s a good addition to a planted marine setup. Feeds well on algae sheets and shows no signs of stress.