Acanthurus sohal is among the most commanding surgeonfish available to the hobby, built on the flattened, disc-shaped frame typical of the genus. The body ranges from dark blue to gray or silver and carries bold horizontal white and blue striping, with yellow fins accented in blue and orange highlights near the caudal peduncle, where the sharp defensive spine sits. Native to the Red Sea, the Persian and Arabian Gulf region, and portions of the western Indian Ocean, it patrols wave-swept shallow reefs and lagoon flats. Juveniles typically arrive around three to four inches, while adults reach roughly 12 to 16 inches.

Adult housing begins at 250 gallons, and a footprint of at least eight feet in length is strongly preferred for a fish that swims constantly and covers ground at speed. Structure matters, but for a different reason than usual: generous live rock with caves and crevices primarily serves as refuge for tankmates rather than shelter for the tang itself. Leave broad open lanes across the length of the tank, since cramped layouts sharpen an already forceful temperament. Strong, turbulent flow suits a fish adapted to surge zones, and stable water quality in a mature, well-established system is expected.

This is an expert-level animal, and much of that difficulty comes down to spatial and social management rather than fragility. Plan the stocking order before the fish arrives, because a Sohal should be the last addition to an established community. A secure lid is sensible given the pace and energy of its swimming.