Purple Tang – Good Size
Species: Zebrasoma xanthurum
Behavior: Moderate, Semi-aggressive
Color: Blue, Purple, Yellow
Diet: Herbivore
Compatibility: Yes
Water Parameters: F, dKH 8-12, pH 8.1-8.4, specific gravity 1.020-1.025
Size: 10″
Origin: Kenya, Red Sea
Family: Acanthuridae
Minimum Tank Size: 125 gallons
| Feature | Detail |
|---|---|
| Color | Blue to purple with yellow tail and yellow accents on pectoral fins |
| Habitat | Red Sea, Arabian Sea, Gulf of Aden, waters off Sri Lanka |
| Feeding | Herbivorous, requires algae-based diet |
FAQ
What is the typical size of a Purple Tang in an aquarium?
The Purple Tang grows to about 10 inches in length when properly cared for in an aquarium.
Is the Purple Tang aggressive toward other fish?
The Purple Tang is generally moderate in behavior and semi-aggressive, especially when housed with other tangs or similar-sized fish. It may become more territorial during feeding or in small tanks.
What kind of diet does the Purple Tang require?
This fish is herbivorous and requires a diet rich in algae-based foods such as spirulina, nori, and algae wafers. It should not be fed primarily animal-based foods.

Wendy Vance –
The Purple Tang is a striking addition to my 125-gallon reef tank. It has a beautiful purple-blue body with a bright yellow tail. It’s active and peaceful, and it eats algae regularly. I’ve kept it for over a year and it’s thriving.
Joan Anderson –
Great color and active behavior. I noticed it’s more curious than aggressive, especially when food is offered. It does need a good amount of algae to stay healthy. The tank size is essential for its well-being.
Audrey Grant –
I was impressed with how fast it adapted to the tank. The color is vibrant and it’s a great visual focal point. I feed it algae sheets twice daily and it seems to enjoy it.