Kalk,
I agree with some of your points. You are right that a lot depends on the relationship between the exporter and the importer. The exporter makes choices about the quality of packing water, the duration the fish are held prior to shipping, the volume of water in the bags and the ratio of compressed oxygen, whether or not the fish were treated for disease, whether heat packs or cold packs are applied in the box etc. Better shippers may use a buffer, or a synthetic salt with more buffer than some other brand (good point). The importers also make choices about the acclimation procedures they use, whether they treat the fish with antibiotics or not (generally needed with stressed fish because of bacterial infections), they also can hold the fish long-enough to allow stress hormone levels to decline (but most don't), use reduced lighting in the receiving room (to reduce stress) etc.
Some exporters and some importers do a better job with handling fish than others. Generally, those that have been in business the longest have the most experience. It should not come as too much of a surprize to find that new exporters or new importers do not know how to apply the best shipping and handling techniques.
I believe that the MO trade can benefit from improvements in these techniques. The industry as a whole would benefit from publicizing the better holding/shipping methods. Generally, this information is not being shared, because the techniques that work give the companies that use them a competitive advantage. The result is high mortality overall in the trade. Enventually, legislators will decide whether a trade that supports the use of cyanide and kills more fish than it sells should be allowed to continue or not.
Peter Rubec
I agree with some of your points. You are right that a lot depends on the relationship between the exporter and the importer. The exporter makes choices about the quality of packing water, the duration the fish are held prior to shipping, the volume of water in the bags and the ratio of compressed oxygen, whether or not the fish were treated for disease, whether heat packs or cold packs are applied in the box etc. Better shippers may use a buffer, or a synthetic salt with more buffer than some other brand (good point). The importers also make choices about the acclimation procedures they use, whether they treat the fish with antibiotics or not (generally needed with stressed fish because of bacterial infections), they also can hold the fish long-enough to allow stress hormone levels to decline (but most don't), use reduced lighting in the receiving room (to reduce stress) etc.
Some exporters and some importers do a better job with handling fish than others. Generally, those that have been in business the longest have the most experience. It should not come as too much of a surprize to find that new exporters or new importers do not know how to apply the best shipping and handling techniques.
I believe that the MO trade can benefit from improvements in these techniques. The industry as a whole would benefit from publicizing the better holding/shipping methods. Generally, this information is not being shared, because the techniques that work give the companies that use them a competitive advantage. The result is high mortality overall in the trade. Enventually, legislators will decide whether a trade that supports the use of cyanide and kills more fish than it sells should be allowed to continue or not.
Peter Rubec