They do
They don't. Perhaps you would like more sources:
britannica.com/animal/mackerel
mackerel, any of a number of swift-moving, streamlined food and sport fishes found in temperate and tropical seas around the world, allied to tunas in the family
Scombridaeherring, species of slab-sided northern fish belonging to the family
Clupeidaebritannica.com/animal/herring
Gadidae family of fish include cod, haddock, whiting and pollock:
en.wikipedia.org/wiki/Gadidae
You refuse to acknowledge that Polish people live in other countries besides just Poland
WTF are you even talking about? All I have said is that herring in Poland is eaten cold. I don't personally care how it's eaten anywhere else and the subject of this thread is how herring is eaten in Poland, not the US, the Caribbean or anywhere else you might care to mention. What is your problem? That you can't stand being wrong time and time again? Or are you so desperate for attention that you'll post any pile of crap just so that you're talked about.....
it really doesn't matter what Poles do in Poland because I am talking about what my Polish babcia did here in the Great U.S.A.
Then you're completely off topic.
Your grandmother wasn't Polish.
I'm still not Harry no matter how much you try and convince yourself.