How long is a few months? 2,3,5,6? I had a few inverts like the ghost shrimp & cousion stars that lived in my tank for just a little longer than a year & who knows how old it was when I caught it. So as for that theory I'm not sure.Yeah, they will survive for a few months. But due to you speeding up their metabolism in the warmer water they will have a shorter lifespan.