I agree with Kalk.....and reading over my previous post, I realize that I had not followed up with the questions it brought.
One major part of this puzzle is acclimation. I forgot to mention that most retailers and aquarists don't acclimate properly and is a major cause of doa's after a 3-5 day period. A common problem we have found in customers reporting doa's during this time frame mostly have not acclimated their fish properly. Over the last few years, we have included an acclimation sheet for each shipment. It's a strange pheonomena that fish will die suddenly after 3 days when eating and acting normally. Proper acclimation goes a long way without saying!
To answer some of the previously asked questions.....
Dizzy asked about what I thought the national average was and I really have no idea. I would speculate though that the doa's are much, much higher in shipments that are transhipped vs. purchased from a wholesaler. Please don't jump on me for saying that, but it's true. Fish go through a lot more stress when re-packed quickly and then sent on another 24-48 hour journey. If fish are properly acclimated, medicated, fed and screened before shipping again, doa's are much less. I do think that transhipping is a black cloud over the industry and undermines the best method of handling methods by wholesalers.....IF DONE CORRECTLY!
Jaime asked some questions too.....
Our PI doa's range from 0% - 30% on a bad day. I would say the average is about 5%. We get excellent quality fish every week from a multiple list of suppliers from the PI. I would estimate that we receive 200-300 boxes per week from this region and it makes up about 10% of our total incoming shipments that are fish related.
We have seen a great improvement over the last 10 years in PI fish. We do give much feedback to the suppliers that we purchase from, and we have weeded through the good and bad. New facilities are still popping up, but more modern facilities with better owners on that side looking to trade in high quality fish.
Best regards
Eric