Sorry if it´s in the wrong place. Just move it then. No it´s white and fuzzy like cotton. I think it´s so hard to find more than the usual information about them. Hoped that someone maybe had tried saltbath but I skip that then. I´m trying with wet sponge hold by a pair of tweezers to remove it and a bath in fishmedicine against fungus afterwards right now. Maybe it´s really bacterial in first place followed by fungus, foodrelated, or even just age making them weeker.
One strange thing is that I bought two but the other one had it in the shop. In the same spot as this guy. It´s a male. They should treat it before I took them home but they couldn´t make it trying for several weeks. They just had fungusmedicine in the aquarium and it wasn´t clean after a turtle that had been in it before. So I took them home but the other one died after two days.
Sorry for bad English too.