I'm having internet issues, and this is my fourth attempt at posting this thread, so hopefully it works this time.
Anyway, when I left the house earlier today, both my angels, which are currently caring for their second spawn of fry, were fine. But when I got back a couple hours later, I noticed that the female now has a circular white patch on its eye. Unless it's just a scrape, I'm not sure how it could have formed so quickly, but there doesn't seem to be anything in the tank that is sharp enough to cause a scrape like that.
I took this pic about 15 minutes before I left (the female is the top one):
Anyway, when I left the house earlier today, both my angels, which are currently caring for their second spawn of fry, were fine. But when I got back a couple hours later, I noticed that the female now has a circular white patch on its eye. Unless it's just a scrape, I'm not sure how it could have formed so quickly, but there doesn't seem to be anything in the tank that is sharp enough to cause a scrape like that.
I took this pic about 15 minutes before I left (the female is the top one):

