I strongly doubt the postal carrier would care. I ordered live fish through the mail, and they simply came in a box labeled "Live Aquarium Fish". no muss, no fuss, and most inportanly, no questions asked. I'd say give it a try. The law is probably on the books because some fool let his loose in the wild because it got too big for his 2.5 gallon tank and it bit some little girl in a local pond. Just don't throw yours out into the wild, and you'll at least be obeying the spirit of the law, if not the letter of the law.