These are wild fish that were caught in Florida. They are currently being quarantined in my 29 gallon. The new fish in my tank have also brought ich in. I'm currently treating with salt and heat. The temperature has been at 88 for 2 days and has been dropped to 86. I think I over did the salt at first. My RTS, that had no ich spots, started acting weird so I took him out, put him in a 1.5 breed box with a bubbler. He started looking better and I did some water changes on the quarantine with ich, so I added him back. He just died and now these minnows look like this. What could this be? I've never come across anything like this before. My Gudgeon is also acting weird but looks physically healthy.