My betta fish bluto seems to be suffering from something. He is bloated even though today is his fasting day and I only fed him one pellet because I felt sorry for him. But that one pellet shouldn't make him that bloated. Actually, I just had him poop. Removed the paper dividing his tank and the other tank with another male. But he seems a little sluggish and I still can't figure out what that fuzzy stuff around his poop is. I prodded it with my fish tank ruler and it clouded the water a bit. I just want to make sure it's not an internal parasite or anything. Thank you.