My clown knife has some white blotches on his body (it's not ich) and his fin looks like there are transparent streaks through them. From a distance, his fins look split but they're not. However, his behavior is normal and he still has an appetite. Has this ever happened to anyone? Does anyone know what this could be? He sometimes squeezes himself into tiny rock caves (made from slate rock) instead of going into the big caves I've made for him. Could this be from scraping himself on the rocks?