Hello, I'm currently doing a fungus treatment on my tank, after 2 of my fish fell ill. A day later they are visibly doing better, but later this afternoon while doing a water change, I found one of my ballon mollies dead in the gravel. I was puzzled because this fish was very active yesterday and earlier today, and showed no signs of stress or illness. The weirdest part is that he had no eyes, all you could see is the little stem that connects the eye. I suspect my other ballon molly, because she would chase him every once in a while when he came too close. My black angelfish is the same way. But I've never seen them actually nip each other. What do you guys think?