Yeah I had to print of their policy and prove to them it was ok. They still refused and told me I had to poke holes in the box so the fish could breathe and pay express for it. I asked for the manager (because he knows I ship fish at that post office) but it was a new guy. I guess the old one I knew was transferred. Anyway, he still didn't let me.
So I went to a different post office and explained to them what was going on and that I've done it in the past no problem. I didn't have to show him the papers I printed because he had one already posted on the wall. We both checked it together and he didn't understand why there was a problem at the other post office. I'm just glad I got it sent safely, she arrived safely, and it worked out. It was still a very frustrating experience, though.