Achilles Tang (Acanthurus achilles)

Quick facts

Appearance

The Achilles Tang is a striking tang with a predominantly dark brown to black body. It features a distinctive bright orange or red-orange vertical band running along the caudal peduncle and base of the tail, which is the hallmark of this species. The body is laterally compressed with a sharp, bony spine on the caudal peduncle characteristic of the Acanthurus genus.

Diet and feeding

Achilles Tangs are primarily herbivorous, grazing on marine algae in their natural habitat. In captivity, provide dried seaweed (nori), vegetable-based flake foods, and spirulina. Supplement occasionally with mysis shrimp or other meaty foods, but maintain an algae-heavy diet to promote health and coloration.

Difficulty and care for the Achilles Tang

The Achilles Tang is a challenging species for experienced aquarists. It requires excellent water quality, a very large tank, and careful acclimation. It is prone to marine ich and other parasitic infections, making quarantine essential. Its semi-aggressive temperament and specific dietary and environmental needs make it unsuitable for beginners.

Common health issues

Marine ich (white spot disease), velvet disease, head and lateral line erosion (HLLE), parasitic infections

Origin and habitat

Indo-Pacific, ranging from the Red Sea and East Africa through Indonesia to the Hawaiian Islands and the Great Barrier Reef. Found in reef environments at depths typically between 5 and 60 meters.