The strong dose of english arrogance always make it's entertaining for us when you come here....:-)
English arrogance? Poles are the most arrogant people in the world,
do you think Polish people would prefer traditional cod, plaice and haddock or a more local fish?
They prefer to eat bottom feeding fish such as Carp. If that can be battered and served with chips you will do very well indeed.
Also how would you incorporate raw cabbage, pickled cucumbers and mayonnaise into a fish supper?