There is so much Deception in the world now days that you must be careful!
Most all Salmon which is "WILD" raised and caught is Ok to eat, but any which is called Atlantic salmon, this is farm raised and it is not fit to eat!
The fish like the sardines are cold water fish and they are ok to eat!''
In the same family of the sardines are the herring and mackrel and such and they are very small fish, so they are not farm raised!
Any fish which is larger size which may be farm raised, you need to make sure that it is "WILD" raised and caught, because "IF" it has been farm raised, then it is not fit to eat!
And over the last several years, china has got into the farm raised fish business in a real big way!
I have a friend who runs a retail fish market, and she showed me the frozen fish which she gets in, and most all of it is farm raised any more and comes from china or tawian!
So, "BUYER" beware!
Smile Tis your choice.