been keeping my snake head for about 2 years now, he has always been healthy smooth scales brilliant colors ect. but a few days i noticed that a small patch of scales on his head were missing, i ignored thinking he banged himself chasing his food, well now he has i bunch of blotches of missing scales, and i'm freaking out could it be from bad water conditions do i need to change something, maybe he caught a fungus from the feeders? any suggestions