hairtrigger, a good idea, have the LFS put it on hold for a couple of days if they will do this, then watch it as much as you can over the course of a few days...watch it eat, make sure he's active and doesnt seem sick...after doing this it won't garantee that the fish will not be prone to sickness but it'll sure give you an idea of what you're up against, and hopefully in the end will provide you with a healthy fish...