A member of the Acanthuridae family, the Achilles Tang is a gorgeous surgeonfish that requires a great deal of attention and care; in fact, it is usually kept only by expert aquarists with a good deal of fishkeeping experience. When first introduced they can be a bit touchy and should be quarantined for a few weeks to be sure they are eating well and adjusted to your reef keeping habits before being introduced into your main display tank. Once settled into your system, they are hardy, active, and very attractive fish.