One of my buddies just bought me about 25 small guppies. Well on about 6 of them they seem to have like white pimples on their lips, eye's and some other areas of their bodies. Do you think this is Ich? I've never had ich before. The tank they are in is a 20 gallon feeder tank for my piranha. Question, will all these fish be a potential threat to my P's? The feeder tank has a bear bottom which i understand is probably a good thing. What is the best precaution to take and please help me with a diagnosis. Thanks