Store whitefish in the coldest part of your refrigerator. They can be frozen for long term storage.
How to Freeze Better at Home
Shelf Life: Up to one week fresh.
Whole whitefish can be smoked or baked in a pastry crust or salt crust (how to bake fish in a salt crust). Of course, you can also cut them into steaks/fillets and sauté, broil, bake, or pan-fry them. Whitefish is delicious in chowders.
Whitefish’s mild flavor pairs well with herbs (particularly chives, oregano, thyme, marjoram and dill), lemon, asparagus, capers, fresh horseradish, mushrooms and cream/butter.
Whole Fish Recipes & Techniques