for longer trips i try and bag 'em... just like your lfs gets them in... 25% water to 75% air... keep the temps in the 60's or up and don't shake 'em like a pair of dice. I've had a fish shipped to me once.. he arrived just fine.. alot of people do different.. but I acclimate the bag to my tanks water and cut and release... ammonia ect builds up in the bag over time, but with depleated O2.. it puts it in a state of limbo... once you cut the bag your water perameters can skyrocket... I always fast fish a min of 3 days before moving as well to decrease waste.