Okay, enough is enough help please!!

[Leah]

I just got a baby yellow coris wrasse and he is scaring me to death. One minute he is swimming around happily and then I go and check on him and he is laying down and looking very dead. Then he magically starts swimming again, he has been doing this since I got him Friday night and I can't figure it out. I can not seem to get him to eat either, err!. Maybe this is tit for tat he is a little joker!
Anyone have this happen.