I shipped my adult molly to another member here, my friend kim-tma ~ somthing like that , I belive ALL arrived alive & healthy !!! and I was glad to get rid of them and start a new tank with new stock . I belive if you use a big kordon bag, that you can ship them with NO problem heat pack or not . depending where thier going , if its only a few states away , they shoudl be just fine !! ~~~ i woudl say , IF you do not have a kordon big bag, whoever could send you one that was only 2-4 states away could have them for the 10.00 shipping . IMHO ~~ just trying to help you . I hate to see these pretty fish end up at the fish store, and I did have molly just like these yes, BUT NOT that buetiful orange with the wild tail OMG ~~ that is SOO pretty !! I would def take just that fish if I could get to it !!! ~~~ good luck ~~