My husband and I have a 75 gallon fish tank. One of our platys has gotten sick, it is laying on the bottom, fluttering its fins, occasionally it actually moves and swims in spirals and its eyes are bugging out really bad. Does anyone know what this is? Or how to treat it? My husband wants to pull it out and kill it, but I am hoping we can save it… Let me know ASAP if you know what this is or how to heal it, thank you!