Got an aquantance that lives and fishes in denmark and the comment about predator fishing is about right. There is good roach,perch, chub, (think the chub record there is in low double figures, think perch record is in the seven/eight pound bracket ) and of course a fair bit of trout fishing.
Might be worth googling "anglers world holidays" as I'm certain they advertise fishing holidays in Denmark.
I believe the north in the hemisphere, the less carp there are (vice versa for pike). Don't ask me why as it's to do with science and big words