what size tank did he put it in? could've been a double whammy. 5 gal fresh water?Many years ago, I managed a LFS in an upper income town. It was a busy Saturday and one of my part-timers was going on how he sold a Niger trigger, clown sweetlips and Achilles tang to some guy. That afternoon, the guy comes back with all three fish dead. It took four hours for the trigger to die. Yes, he had put them in a freshwater community tank. All salesmen were then instructed to ask if the customer had a marine tank. PS, We never saw that customer again.