when we have to transport guy from Pennsylvnia to California or guy to anywhere at that, we put him in a tupperwear bowl, a large one at that as guy is 8 inches or so long. Also there is a whole on the top of the tupperwear bowl for a air tub thing to go in and mix up the water. We then plug that into a plug that works on batteries. It seems to do, but I wouldn't take my fish on vaction they stress easily. I am thinking about takeing my rats up to my grams. It will be a 4 hour car ride but I will be holding them most of the time or they will be in a crate, but then again, thats rats.