Preheat oven to 500 degrees. Place into the oven a baking pan large enough for the amount of fish you are going to bake (Croaker are most often pan size fish). The Croaker should be cleaned with bones left in. Take fish and coat both sides with melted butter or vegetable oil, roll oiled fish in a mixture of seasoned bread crumbs, nuts, and sprinkle with salt and pepper. Place fish onto your pre-heated baking dish and put back into oven and cook at the high temperature for 10 minutes.