I have maroon clownfish and as you can imagine they nip me every time I put my hand in the tank. The female also chases the glass cleaner around the tank and stirs up the sand with her tail. When both my clowns were in QT they would lay down sideways on top of each other as far as they can under a pvc pipe and sleep there.
My clown loves to sleep against the overflow grate. Scares me to death on a daily basis. He also found a way to jump out of the water and into a frozen food defroster I have. Luckily there was enough water in the thing so he didn't die.