I had something that looked very similar with the Caquetaia kraussi I picked up at the rare fish auction.
I went heavy on the salt and cranked the heat to about 85.
Cleared it right up within a few days.
i picked a handful of umbee up from a distributer in florida. after a few days their health started to go south. i kept them in clean salted water for a few weeks, then i decided to treat 5 days with marycen and marycen 2, and they got worse.
any advice on next course of action, or what the name for the disease would be. i know a few others have experienced this from the january rare auction.