I have one of those . . . a male leaf wrasse. He is a great reef fish. A "female" came with him, and SHE exhibited the behavior of the dragon wrasse. She moved rocks that were bigger than she was, and lifted up corals to find snails to eat. Needless to say, she doesn't reside in my reef anymore, but the male is a very nice fish.
They have the neatest eyes . . they are red and move independently. kind of creepy. . . .