I have four clowns, the smallest one is the only one that bites my hand. But he is tiny, so its just annoying how he darts at my hand. Sometimes I flick him away, other times, he just leaves me alone. I have this long glove that goes all the way up to my shoulder. I bought it when I first started reefing, its made so you can touch corals etc without harming them with oily hands, cologne, soap, whatever. If I know I'm gonna have my hands in the tank to clean the glass or move things around, I put them on and I don't feel him poking me. Not that it hurts mind you, but you wont feel a thing with them on.