Epaulette Surgeonfish (Acanthurus nigricauda) Eyeline Tang

Care Level: Difficult
Behavior: Semi-aggressive
Reef Compatible: Yes
Max Size: Up to 16"
Diet: Herbivore

Epaulette Surgeonfish (Acanthurus nigricauda) Eyeline Tang


The Epaulette Surgeonfish, otherwise known as the Epaniette Tang or the Eye-line Surgeonfish, is of larger size in comparison to most tangs. They are a blue-gray in body with black bands which extend behind each of their eyes to the white band ring of their tails. One of the friendliest tangs for the aquarium and one of the most interesting fishes as well, especially when showing signs of aggression or during courting, the Epaulette can change colors from light to dark and it’s amazing to see.

It is best to keep the Epaulette Surgeonfish in a 250 gallon tank or larger for water movement and plenty room to swim. They require live rock for creating territories and imitating their natural habitat.



Although tangs will eat meaty foods, they prefer marine based seaweed and algae which will boosts their immune system, reduce aggression, and improve overall health. To feed them, tie dried seaweed to a rock or use a veggie clip, and feed at least 3 times per week.

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BluReef Aquarium

2198 Flatbush Avenue

Brooklyn, New York 11234

United States

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Brooklyn, NY