Orange Shoulder Tang – Acanthurus olivaceus

Acanthurus olivaceus—known as the Orangeshoulder Tang—is a graceful, reef-safe herbivore that matures from a dusky-yellow juvenile into a sleek gray adult with a bold orange shoulder bar and powder-blue edging. Active yet even-tempered, it thrives in mature 125–150+ gallon aquariums with long swimming lanes, strong oxygenation, and plenty of established rock for constant browsing. Generally peaceful with dissimilar tankmates, it may posture toward other tangs—especially similar shapes—so keep singly or introduce last. Provide an algae-forward diet (nori/seaweed clips, spirulina pellets, quality herbivore blends) with occasional mysis to maintain color and condition. As a dedicated film algae and diatom grazer, the Orangeshoulder Tang helps keep rock and glass polished without bothering corals, making it an excellent choice for mixed reefs and FOWLR systems. Our Acanthurus olivaceus for sale are expertly conditioned at Discover Aquatics in Taylor Mill, KY and ship via UPS Next Day Air® for peak vitality. Buy saltwater fish online with confidence from your local aquarium store serving Cincinnati, Northern Kentucky, and Indiana—and finish your setup with our WYSIWYG coral selection.