Transporting Those Fish.   A Few Pointers Shipping fish can be a daunting and worrying thing at the best of times, but if done correctly, then your fish should arrive at their destination safe and sound. Many fish are lost in transit due to .. Incorrect packing... Stress, due to bad packing.. Ammonia poisoning due to too many fish... Bags that are not sealed correctly.. No heat packs.. so fish are cold on arrival... Late pickups... Too many to a bag... Punctured bags thr