Black-Spot Surgeonfish (Acanthurus bariene)

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Black-Spot Surgeonfish

Acanthurus bariene2342.jpg
Male Black-Spot Surgeonfish

Acanthurus bariene

757 Litres (200 US G.)

45-50 cm (17.7-19.7")


8.1 - 8.5

23 -28 °C (73.4-82.4°F)

8-10 °d

1:1 M:F

Other (See article)

2-3 years



Additional names

Black-Spot Surgeonfish, Bariene Surgeonfish, Roundspot Surgeonfish, Eye-Spot Surgeonfish, Black Spot Tang, Black Spot Surgeonfish

Additional scientific names

Hepatus bariene, Acanthurus kingii, Acanthurus nummifer

Sexing[edit | edit source]

Mature males will develop convex foreheads that extend beyond the mouth.

Tank compatibility[edit | edit source]

Is best kept to the only Tang-like fish in the tank as it may be territorial towards other similar-looking species. Will be otherwise peaceful towards tank mates and is reef-safe.

Diet[edit | edit source]

Will mainly graze on algae and spirulina, and may also take lettuce, dried seaweed and zucchini. When buying these fish be aware that stock can easily starve, do not buy fish with sunken bellies.

Feeding regime[edit | edit source]

Feed two to three times a day.

Environment specifics[edit | edit source]

This is a large active fish needing a laterally spacious tank, they cannot thrive in fish-only saltwater tanks, they need live rock to graze on. They make excellent algae-eaters.

Behaviour[edit | edit source]

Active and can be territorial.

Identification[edit | edit source]

Oval-shaped fish, with a steep forehead. The juveniles are fairly unremarkable, but as they mature their colours begin to show. The body is olive-brown with blue and yellow hues, the fins are yellow-orange with blue accents and the caudal fin is sharply forked. The caudal spine is black.

Pictures[edit | edit source]

External links[edit | edit source]