GotGarlic
Chef Extraordinaire
Maybe, possibly, but why would anyone open an airtight package and put it in a plain bag?
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To divide the amount? RB said it was frozen, so his friend may have opened the package he bought, divided the fish into two new FoodSaver type bags and put them back in the freezer.
It's just a guess. That type of smoked fish, sold in different places, was the only result from my Google search.
Or maybe the friend got it from someone who made something like that product and just used the name, in which case there's no way to determine what it is without contacting whoever made it.