I plan on shipping Peppered Corys in the semi near future, and wanted a few opinions on how I would do so. First off, I read about some sort of toxin produced by cories, so I need to worry about that? Second question is do I need to double bag them? Third-should they be filled completely or filled like a normal bag with slack? Four- how thick should Styrofoam coating of box be? Fifth-how many corys per bag, bags are 6"X10"? Six-what is the minimum weather in destination that I should be Shipping? Seven- is it best to write fragile, write perishable, write liquid, write liquid, write live fish, or not write anything at all, or a combination of them? Any other tips/tricks that might seem helpful in this process? I plan on using a medium flat rate priority mail box, with a 72 hour heat pack. Thanks for all suggestions.