I have a 90g reef that is mostly zoa's and mushrooms at the moment. I moved to a new house last year and had some die off afterward, and the tank has been somewhat neglected ever since. The tank has a chromis, angelfish, and the clownfish. Ever since the move, when I stick my hand into the tank the clownfish tries very hard to take a bite out of it. After about 5 bites he gives up, but continues to follow and circle around my hand wherever it goes. Any ideas on why he is so aggressive? Is this behavior going to be dangerous for any of my inhabitants, present or future?