My LFS is going out of biz:pooh: But their loss is my gain...atleast for now. They have a Catalaphyllia Blue green its about 7" from end to end. It looks kind of like a clam when closed. .00 I have read that they are aggressive. What does this really mean and is it too big for my 55g? When it is open it is unfricken real.:^: Its from their display tank.