quick question for all of you umbee experts: does mine have a misshapen head? He always appears to be puffed up like he is getting ready to lock lips, or like he just swallowed a large pellet. He has been this way since I got him. I am worried that it may be from a previous injury or a birth defect, though it never stops it from eating/ swimming around, and I have never seen him show and aggression or get any aggression back to him. Maybe the pictures don't do it justice. If you need, I can post a video. thanks in advance for your thoughts