how do I know if my fish has ich?

so we should put it in the freezer then? I'll do that tonight.

And tell me about the situation, it sucks, i'm trying to be the good friend, tough when you have someone that owns a tank and they have a friend that has 8 fish, an anemone, shrimp, no heater, etc in the same size tank and its fine. So when I tell him something, its like talking to a wall. I got him to buy a heater this weekend. trying to help him the best i can.