Okay, some may remember me about the pregnant fish I have, but now something is killing it and another fish. The pregnant one, who we'll call white, now has a reddish face, and a bit of it's cheek has come off revealing more of its mouth, and it's mouth cant close properly. The second fish, who we'll call gray, has a circle on his side that has taken away some of his scales, revealing a thin layer of skin then some flesh. What could be killing/hurting these two fish while the others, to what I can see, are completely fine? Please help.