After a quick consult with my wife, it has to Kermit, one of our 10" Oscars. Mr Personality plays peek-a-boo and gives me that fishy "I'm gonna get you" look if I kiss my wife where he can see, then she comes over and kisses the tank by him and he dances and splashes. We even set up the camera to record his "fishy shines" sometimes when he's acting crazy.