I am treating him with a medicine called "Oxytetracyn". It has only been two days, but he seems to be doing a little better. My question is, he also has what looks like stringy see through slime that is floating around his body and it is caught on his scales and fins. It is also floating around in the water. I seen in the store where they had a medicine that treated parasites and it showed a picture of sqwiggly lines attached to the scales and fins. Is there a big difference between what a parasite looks like and what stringy slime looks like, or is it possible that the stringy lime that I am seeing could really be a parasite?