Powder Blue Tang (Acanthurus leucosternon)

Few tangs generate more demand — or more heartbreak — than the Powder Blue, a brilliant sky-blue body set off by a jet-black mask and a yellow dorsal stripe. It's also notoriously sensitive to poor water quality and one of the first fish to show stress from ich, so it's a fish we only recommend into a tank that's already fully cycled and stable.

Care level: Difficult · Temperament: Semi-aggressive · Max size: ~9" · Min tank: 150+ gal · Diet: Herbivore, algae + herbivore pellets