Does anyone know what that white mark is? My other clownfish had that mark on her chin before, but it went away after a week. Now this little guy has it. He doesn't has any strange behaviors. He swims normally and also eat well. My other clownfish was also like that too. Nothing strange was going on, except that white mark. Is it some kind of disease? I hope it doesn't come back again. Sorry for bad photo. I had hard time taking them. The white mark is located at between his mouth and eye.