those smoked sardines in oil are delicious - i loved them since childhood in Kiev, and in Russian NYC neighborhoods you can just buy them at a grocery store.

however i must warn you that when fish is canned in oil the Omega 6 from the oil can dominate the Omega 3 in fish by a ratio of up to 10 to 1 depending on the type of oil used.

so i only have those smoked sardines in oil as delicacy on holidays, like candy.  for nutrition i use frozen wild caught salmon.  

for salmon i have to add oil and spices to make it not taste like cardboard but the crucial difference is i control which oil i use ( i typically use Coconut oil as it's the cheapest harmless organic oil and tastes good, but there are other good options too ).

industrial Omega-6 seed oils is the number one thing that changed in human diet as we went from being thin to being obese.  while only some of those oils are outright toxic the sheer AMOUNT of these oils in modern diet is a major issue. 

could say more but gotta run to gym ...