I would not mix them if I were you. There is a chance of spreading pathogens, aggression/bullying, and stress issues that could be caused. If I were you, I would set up a nice temporary container with some moist sphagnum, a few plant clippings, and a very shallow water dish for your tarapoto. With thumbs being so tiny.. you would want to make sure that there are not any holes in the lid that it could escape from. I usually use a plastic storage container with a tight lid. It could be as small as a shoe box for that little guy.