Ive had my blue hippo for about a week. Everything was ok until i noticed today a few white lines, no spots, on both of his sides. She eats without problems and i havent noticed any scratching on rock or anything like that. I cant get a good pic cuz shes small and fast. I have noticed that my 2 perc clowns have gotten a little aggresive toward her when she nears their spot. She follows them around everywhere. The clowns kinda nip at her sides. Could this be stress? I dont think its ich or hlle. Ive looked thru countless pics of sick hippos and nothing resembles what i see on her. Lines run vertical right in the middle of her body.