I rescued my largest fancy goldfish out of my pond last week, it's about 6". It was just kinda laying on his side, so I filled a bucket with pond water, uporooted some pond grass and put him in there to seperate him from the others. It's staying alive but it just lays on it's side. It looks like it has missing scales but I don't see any major ulcers or any thing. I tried to feed it, it sucks the flakes in but then spits it out. Should I bother keeping him alive? Is there some thing I can give it?