@mjfromga hi and thanks for having a look.
i took a quick shot of her in her isolation subtank, as you can see, a bit more blotted on the side with ulcer. I have noticed that her veins are more pronounced under her skin than in the past. She is eating but not active. I disinfected the ulcer, gently patted it dry and applied a local antibiotic ointment (suggested by local aquarium shop via instagram)
Temp is 70° F or 21°C
ph = 7.8
Ammonia level is 0.006 ppm - not toxic.
Just had a nice rain dropping about 3/4 inch of rain in the pond and adding O2. All the 21 other fish are well. There was reproductive play going on, the eggs are eaten fast tho. (FYI, its summer her in Brazil)
thank you so much for your feedback to help my debutant kinguio goldfish skills.