Looking at it to me it’s fungus on the ornatus. Not sure about the ray. Keep temps normal (78-80) with salt (1tsp pergallon)and fungal med or can do a methylene blue dip by itself.Heat and salt worth a shot or straight to meds you think?
Point well noted. I believe separation from the ray will help. Likely cause or source for me.I'd be cautious about medicating and not knowing what the cause is. I don't like it at all. To me this is the last straw.
Exceptions include my anti-parasitic treatments when I use potassium permanganate on fish from the wild to cleanse them externally and metronidazole + praziquantel + fenbendazole cocktail with food to cleanse them internally.
Atleast for a while. Till things improve and easier to monitor. If it’s I’ll from the ray then separation will help. Just my suggestion.Sounds like your saying they should not be kept together????