Thompson's Surgeonfish (Acanthurus thompsoni)

Quick facts

Appearance

Thompson's Surgeonfish is a sleek, compressed tang with predominantly dark gray to brownish coloration on the body. It features bright yellow pectoral fins and a distinctive yellow stripe along the lateral line. The species has the characteristic scalpel-like spine near the tail base typical of Acanthuridae, though it is relatively inert in peaceful conditions.

Diet and feeding

Feed high-quality herbivore pellets and dried seaweed (nori) daily. Supplement with blanched vegetables such as spinach and zucchini 2–3 times weekly. This species requires abundant vegetable matter to maintain health and coloration.

Difficulty and care for the Thompson's Surgeonfish

Thompson's Surgeonfish is moderately difficult, requiring a large, well-established tank with plenty of swimming space and stable water conditions. It demands high-quality filtration and consistent feeding of vegetable matter supplemented with quality pellets.

Common health issues

Marine ich (white spot disease), fin rot, parasitic infections, nutritional deficiencies if insufficient vegetable matter provided.

Origin and habitat

Indo-Pacific region, ranging from the Red Sea and East Africa through the Indian Ocean to the western and central Pacific Ocean, including the Hawaiian Islands and Great Barrier Reef.