The worst nightmare a reefer can have. A few weeks ago, I bought the longhorn cowfish. After a week, I noticed my blue tang had white spots on her body. Sure enough, it was ich. The blue tang has been in quarantine getting treated for a week. I have been trying to catch all the other fish and remove them into QT, but before I could, the cowfish came down with ich - hard. He is in the small tub with ich medicine right now. I’m hoping he will pull through but it is not looking good. No fish in my tank has come down with ich until now, which leads me to believe the cowfish brought it into my tank. Even though this doesn’t really count as a disaster, especially with hurricanes and earthquakes all around us at the current moment, please think good thoughts for my fish. Ich is a horrible parasite and I hope with enough luck I can pull through with minimal losses, if any.