I prefer not to use USPS because of a couple of similar instances. I ship the majority of my fish via UPS or Fedex with no problems. I will only ship USPS if the buyer insists on using their service. I truly hope your fish arrive tomorrow. I had a box of juvenile Festae lost by USPS for the better part of a week. The box finally arrived wet and a little crushed. But thanks to the great packaging by the seller all the fish arrived alive. So don't give up hope. Like Ryan stated above, I've also heard of people waiting for fish that were never shipped in the first place. I'm not saying this is what happened to you though. Hopefully you purchased from a reputable person. Good luck!