She used to be my best eater, refuses to eat now, I always see her up top gasping for air I caught her yawning today. Her Gil's are a strange brownish white color now, and her eyes look like they're squinting. I had feeder gold fish in the tank (never had any issues before) but I took them all out and replaced 95% of the water. Still not much improvement. The other 2 are fine. Her gills also look like they're starting to shrink a little and she pulsates every 5 seconds. It's been about 2-3 weeks.
I have a before and after picture
I have a before and after picture