This tang doesn’t show up that often and usually when it does it comes in very large, 8 inches or larger, and requires a large tank. They’re reef safe as they don’t bother any corals. Unless you have a very large tank you should pass on them as they don’t do well in a small tank.
Scientific Name: Acanthurus nigricauda
Fish Diet: Lots of greens, nori, Formula I & II
Reef Safe: Yes
Minimum Tank Size: 150 gallons
Relative Care: Medium