I am new to the world of fish and do not have a lot of experience. I started my tank around the middle of November of last year. I started with four fish and my tank has grown steadily since then. About a month ago I got two balloon mollys. Yesterday I noticed my black balloon molly has fuzzy spots on its sides and her eyes look fuzzy. My silver Balloon molly has one spot on her side but it doesn't look fuzzy. My Bala Shark has become very thin. My Dalmatian lyertail molly has now became white on his back from his dorsal fin to his tail. I have moved the Dalmatian and black mollys to separate tanks. I am very concerned with all of them. Any help you can give me would be great!!!!