I helped a friend move over 80 africans for 5hrs road trip...we prepare this out during the hot summer season by bagging 2-3 fish per bag...we use bags from the LFS since these bags are higher in depth we fill the bags only with 50% water and drop them in a large cooler which also contain some tank water and a thermometer...cover up the cooler with some blankets for extra insulation, we check thermometer 2 times in 5hrs everything was stable.