Dussumieri Tang

Overview

The Dussumieri Tang (Acanthurus dussumieri) — also called Dussumier's or the Eyestripe Surgeonfish — is a big, robust, handsome tang with genuine presence. Its large oval body is a greyish-tan to yellow-brown, overlaid with fine wavy blue lines, and finished with a bright yellow band masking the eyes, a yellow dorsal fin and a yellow, blue-flecked tail. Like many surgeonfish it shifts colour intensity with its mood. Australian-collected 'Aussie duss' are especially prized, and it's a species found right through our own waters.

It's a hardy, vigorous, constantly-grazing fish that earns its keep keeping rockwork clean, and it's fully reef-safe.

The honest catch is size and space: this tang grows large and swims all day, so it's a fish for a big, established system. We rate it intermediate — the husbandry is straightforward once it's settled, but the tank requirements and the usual tang susceptibility to parasites mean it's not a casual purchase.

Compatibility

For a large Acanthurus, the Dussumieri sits toward the milder end of the temperament scale — it's generally peaceful with dissimilar tankmates and many keepers describe it as one of their more laid-back tangs. That said, it can be territorial toward other surgeonfish, especially other Acanthurus and similar shapes, and it becomes more assertive in a tank that's too small for it.

Keep one per tank as the rule. If you're mixing tangs, do it in a large system and add them together (or add the Dussumieri before more aggressive species) so no one fish claims the territory first. Good tankmates include gobies, wrasses, blennies, angels and other non-competing community fish. Take care with the sharp caudal scalpel when netting or working in the tank.

Health & quarantine

The Dussumieri is a hardy, robust tang once established, but it carries the usual surgeonfish vulnerabilities: lacking a heavy slime coat, it's prone to marine ich and velvet, particularly through the stress of collection and acclimation. A proper quarantine period and a slow, unhurried acclimation are strongly recommended and greatly improve long-term success. As an active fish it wants strong, turbulent, well-oxygenated flow and pristine, stable water — good filtration and a decent skimmer help. Support it with cleaner shrimp or wrasses and a varied, algae-rich diet, which also guards against head-and-lateral-line erosion (HLLE). Treated well, it can live 10–15 years or more.