I purchased a 15" Showa from Kodama that was shipped to me a little over a week ago. Upon arrival I noticed a fair amount of surface breathing - which I initially believed was stress from the environment change/lower temp (I'm in NY). The next day the fish was resting on the bottom of the QT with clamped fins and not eating. He remained primarily in this state for the next two three days. On tuesday last week I began treatment with Proform-C. As of today the fish was primarily swimming but still not eating. Upon closer inspection I observed an ulcer on near the head and irritation on the edge of the tail. I treated these areas today with iodine and also did a scrape. The attached photos are taken from a slide of the sample. Given that I finished dosing with the Proform-C several days ago it may be remnants of a parasite. Thanks in advance for any help in the dx.
PS - My QT is an an old 500 G pond that has no fish but is occupied by some frogs.