Mine is out pretty much all the time, and he's definately got personality. Kind of a food hog though . . . .rather than stick with one piece of food, he looks for the groups of fish that are eating and then tries to chase them all away so he can eat what they're having . . . .doesn't bother them, they just go somewhere else and eat until he notices they've moved.
Mine must be an overactive "clicker" . . . .haven't nailed down what makes him do it. He does it just after I put food in the tank. Just after the lights go out and the moon lights come on, and in the morning when the lights come back on.