No, been there for a while, hasn't really spread. Non of the others seem to have it. I have kordons ich attack but am hesitant to use it if I don't need to.
hard to say from pics, if been there awhile and not gotten worse, might try treating with a anti fungle/bacterial. Kanaplex should do the trick if thats what it is, at the same time can crank the heat up to 88 or so as this will get rid of the ICK over time if thats what it is.
My pup tank is set up to run off the same filter. The stuff I bought is herbal and said to be scaleless fish safe. Only time I've ever had ich was years and years ago when I first started with cichlids. Used the blue stuff and it was gone. I know better than to use certain meds with Rays hence why i was looking into kordon ich attack or seachem Paragaurd. Both which I have read are ray safe.
Yes that ich on the tiger stripe SD it hard to tell on silver fishes, best thing is to set up a small quarantine tank so your rays is not bother. Im old school and like quick cure( the blue stuff) work great. The all natural herbal ich medicine never did anything for me.
Going to attempt the heat and salt method for now, both tanks are run from one sump so can only assume it's spread so I have to treat all 770 gallons at this point. =\