I have a tennenti tang affectionately named "Leuitenant Pat" by my seven year old who will allow me to hand feed him small pieces of nori, spirulina flake, and mysis. From time to time he will let me scratch his side and rub his forehead, but the funniest thing that he will do is play peek-a-boo with my seven year old. "Pat" will hide behind the rock work and my son will kneel in front of the tank. IF my son peeks over the bottom of the stand and into the tank the fish runs back and hides. If my son waits to long the fish starts to look over the rock work and look for my son. It's pretty funny.