This is of course dependent on buying a good brand.
Drying oils like these go bad easily and I can tell when I get ones that have oxidized.
Salmon is a great source of Omega 3. I eat Alaskan salmon every third night for dinner.
Alaskan salmon is the only salmon to eat. Salmon from the Atlantic is all farmed.
Walmart has terrific Alaskan salmon, my Safeway has it too and so does Trader Joe. Kroger/Fred Meyer has nothing but Atlantic salmon.