Hi Bro,
Welcome to the world of marine. Guess the clown fish is much fatter than before?
If you are wary of it, I would recommend taking out since without pictures, its quite hard to figure out what type of marine life that is. Morever, there are many more creatures hiding in the live rock. ( I haf a 20-30cm bristle worm hiding in the rock). Most importantly, wear gloves when handling the tank and enjoy this hobby!