I got my roommate two mollies as a Christmas gift (REALLY late!). The store said they needed salt, so I am assuming they were kept in salinated water at the store. I have read on this forum that mollies don't NEED salt anymore, but I was wondering, if these fish have been raised in salinated water, will they always need salt, or can they adapt to complete freshwater? If they can adapt, what would be the best way to do that? They are going to go into my roommate's 10 gallon community tank if possible. Otherwise, we can probably get them their own tank, but I hope we don't have to (they are currently being floated in QT. I put a little bit of salt in the QT tank already, but not the full amount).