i've done several moves with a variety of fish (Large ones up to 3'). Biggest thing i have learned is to have an exit strategy. When i moved my 3 2'+cats and a 30"+ Arowanna the basement of my new house, where i was supposed to set up my tank, flooded. They sat in a 100 gallon rubber maid for a month during the clean up process. I just moved again this February, and in the cold north, don't leave your fish unattended. I moved and immediately had to go on a business trip. In the confusion my wife forgot to do the morning and afternoon water changes...and forgot to keep them warm. Lost 15 fish that week. So always always always plan ahead for your moves. Unless you are driving more than 6 hours, water will hold enough O2 for them to make the trip (even with all the sloshing). But one poster said to stop feeding 2-3 days before hand. I would stop feeding 5 or more days, depending on size of the fish. You really want them to be as empty as possible and as HEALTHY as possible. Health is key. If they have to sit for an extended period in a tank during a move, use a sponge filter that was in their original tank. It will help, albeit not a solution, to help keep water clean and oxygenated.