This recipe for Pike in Aspic is quite simple and can be used also to make Carp in Aspic. In fact, for Polish Christmas Eve, both are often served, so while making one, the other is made at the same time.
Looking at the picture you can see how the pike is cut and laid in the pan.
With that in mind, prepare this dish following the recipe for Carp in Aspic.
Pike in Aspic is typically served with horseradish sauce and/or lemon wedges.
Here are some good videos and below that links to many Polish food recipes.