Ok i don't know how but i think one of my 5 snakeheads has ick i noticed the white dont's and a swollen anal hole. I do not feed these guys feeders at all, only frozen foods and some pellets...I asked a worker at Big Al's aquarium service if there was any natural ways to get rid of ick and he told me to feed them garlick. Does this work, because i heard to many water changes can kill snakeheads (so i don't want to use medicine) and that snakeheads are intollerant of salt so thats out of the equation.