Fish
Powder Blue Tang
Acanthurus leucosternon · also called powder blue surgeonfish
Grazing steadily across a sunlit reef, a powder blue tang flashes its vivid sky-blue body and bold black facial mask, a razor-sharp spine near its tail ready to deploy in an instant should a rival or predator press too close.
Overview
The powder blue tang, Acanthurus leucosternon, is native to ocean and coastal reef habitat across the Indian Ocean. Its vivid blue colouring, bold black facial mask, and razor-sharp defensive tail spine make it one of the most visually striking yet genuinely demanding surgeonfish species kept by marine aquarium enthusiasts.
Beauty that comes with a learning curve
The powder blue tang’s dazzling colour makes it one of the most sought-after surgeonfish in the aquarium trade, but its reputation for sensitivity means that admiration for this fish is usually matched by an equal amount of careful planning.
Status
Least Concern, remaining widespread across suitable reef habitat throughout the Indian Ocean.
Powder Blue Tang: common questions
Why is it called the powder blue tang?
It displays a striking sky-blue body colour, a vivid shade that gives the species its common name.
What is the sharp spine on a powder blue tang for?
Like other surgeonfish, it carries a razor-sharp, blade-like spine near the base of the tail, used defensively against predators and rivals.
Is the powder blue tang easy to keep in a home aquarium?
No, it is generally considered a more sensitive and challenging species to keep successfully compared to some other tangs, requiring careful water quality and diet management.
Where is the powder blue tang found?
It is native to ocean and coastal reef habitat across the Indian Ocean.