I just made a run to my local post office about 30 mins away. Once I informed the lady I was shipping aquarium fish, she immediately said that was prohibited and even if it were allowed the box would need air holes. I said lady, these are fish in oxygenated bags and I have all the proper permitting in place. Regardless, in 30yrs of working here she has never heard of such a thing.(granted this is a very small town PO) At this point I'm started to get a little heated, I said I'm amazed you aren't familiar with the mailing of live animals and can you verify this with a superior. She said was alone this time of day. Being closing time, a huge line had started to form; so I just took my package and left. She seemed very offended that I would attempt to ship a living animal.