I have two axolotls, that are normally a healthy white color, but lately have been looking a little red. I read the health page, but its kind of hard to tell if the red is patchy or not. I just bought a heater for my tank, cause its been getting really, really cold here. I don't know if thats it or the feeder fish a bought a while ago. I'm really worried. I put them in a new tank with some medicine that worked last time they got sick. But when I went to transfer one of them to a salt bath by hand, some of her skin came off. Is that a really bad sign??? I don't know what to think. Please help!