Temp 77°, ph 7.2, ammonia 0, nitrite 0 and nitrate about 20ppm.
The white patches are hard to see, but they are towards the back of the body and are visible in the first 2 pictures. I'll try to get better pictures.
I bought the fish yesterday in Oregon and noticed the symptoms when I got them home, so thankfully it's not something that developed in one of my tanks. I suspect the sick ones were hidden away because I didn't notice anything at the store.
I'll move them out of the tank right away and start treating with salt and kanaplex. Thank you!