I have a red cap oranda and his eyes are popping out + there was whit-ish fluid coming out of it(popeye?). His scales are falling off, he bottom-sits a lot, and stays in the top barely moving. But some days, he swims normally and also, he still eats normally.

I asked the pet store employees and they said to treat him with Pimafix... But I kinda don't trust them so I haven't started the treatment--but I did buy it.

Any suggestions? It's my first fish so I'm completely clueless. :( Thank you!