What does he do when you take him out of the aquarium? Does he keep trying to strike or does he calm down? My male is food aggressive but once he is out of the bin he is tame enough for my 8 year old to handle (with supervision). I found that with some, if you hook them out of the bin, you save your hands, they immediately calm down once they're lifted . . . .But I have also seen some that will bite at you consistently even when they're held . . .Everything can't necessarily be explained by just temps, food, hides etc.