I've had blueheads and a lunare wrasse. Regardless of their agressiveness, be prepared for fish that are constantly in motion, and I mean constantly and fast. The effect is hardly hardly peaceful, if that is important to you. One bluehead I had constantly swam into the sidewalls of a 180 galllon tank, headon into the glass! The lunare has beautiful color, but color seems to vary based on what he is fed, and he always prefers food that floats for awhile, like flake, frozen, krill(freezedried). Mine is in with a rabbitfish, a flamehawk, and a red striped squirrelfish, and they get along tremendously well, although the squirrel does like to steal the larger chunks of frozen food, and drag it to his cave, but that's probably instinctive for him.