Elongate Surgeonfish (Acanthurus mata)
The Elongate Surgeonfish is a large and powerful marine tang recognised for its streamlined body, elongated profile and subtle blue-grey to brown colouration with fine horizontal markings. As it matures, the species develops into an impressive open-water swimmer that requires substantial space, strong filtration and excellent oxygenation. Best suited to very large, mature marine aquariums, it is generally reef safe but should be kept with robust tankmates and given ample room to establish its territory.
Common Name
Elongate Surgeonfish, Elongate Surgeon, Mata Tang
Scientific Name (Latin)
Acanthurus mata
Maximum Size
| Size | Details |
|---|---|
| Maximum Length | Up to 30 cm (12 inches) |
FAQ
What is the ideal tank size for an Elongate Surgeonfish?
The Elongate Surgeonfish requires a very large marine aquarium, ideally 150 gallons or more, to thrive due to its active swimming behavior and space needs.
Is the Elongate Surgeonfish reef-safe?
Yes, it is generally reef-safe, but it should be kept with robust tankmates and given ample room to establish its territory.
What are the key water conditions required?
Strong filtration and excellent oxygenation are essential. The fish prefers stable water parameters with a temperature between 24–27°C and a salinity of 1.020–1.025.

Faith Walsh –
After adding the Elongate Surgeonfish to my 200-gallon reef tank, it has become a dominant swimmer in the open area. The fish is active and healthy, and it doesn’t show aggression toward corals. I recommend it only for experienced marine aquarists with large tanks and strong filtration.
Jake Ogden –
The fish looks beautiful with its blue-grey body and horizontal stripes. It takes time to settle, but once established, it’s a great addition to a mature reef system. I keep it with a few robust tangs and it coexists peacefully.
Jacob Ince –
It’s a large fish and needs a lot of space. I had to upgrade my tank size to accommodate it. The fish is active and requires strong water flow, which I now maintain with a powerful sump system.