Fish collars are an often-overlooked delicacy that are worth your attention. The collar refers to the section that begins directly behind the head and ends just behind the pectoral fin (right before the start of the fillet). While more commonly prepared with saltwater fish, the collars from large trout and salmon also have collars worth saving. This meaty section is perfect for the grill and will help you make the most of your catch. Start collecting and freezing collars until you have enough for a meal, then throw them in your favorite marinade, grill, and enjoy.