To import your own fish you will need to obtain the nessesary permits and licenses from the from the government unless you go through a middleman such as oddball express or amazon exotics which will take care of the import side of things for you but add a small charge onto the price of your fish. On the whole it is not worth importing your own fish unless you want either a large quantity of fish at prices lower than the lfs give or you want a difficult to obtain species. In most cases there will be a minimum order ammount before the foreign exporters will deal with you so it is best to try and form a group of hobbiests to place a order with you to make up the numbers.