I had one and it was a great fish to watch swim. It would swim all the time, and it loves to eat. meaty food shrimp, cubes, feeder fish for treats, etc. They do get big. The one I had in my tank was abot six inches.
I was diving in Maui two years ago and saw one that was about 15 to 17 inches and about 11/2 to 2 innches thick. I could not believe that the fish in my tank at home could ever get that big. It might not in a tank, but they due get big. What size is your tank, what other fish do you have? My wrasse was in a tank with a yellow tang, small huma trigger, and grouper. It was a very aggressive tank. All did fine.