I wanted one once, but turned my back on it once I find out how mean it can be to other tank mates, but if you search on here. There is a guy that keeps one in his tank, the guy that did the DIY rock formation in his tank. He says that the Achillies Tang keeps everyone in check, it's the master of the tank. Just remember, they can grow rather large and need LOTS of space for swimming room!!! They are also harder to keep then some of the tangs since they tend to get ich easily as well from what I've read before....Good Luck!