Frozen Atlantic Salmon Fish Heads for Sale (Wild Salmon Heads) Frozen Whole gutted fish, head on Main size gradings: 1-2kg, 2-3kg, 3-4kg, 4-5kg, 5-6kg Superior or ordinary Other salmon products such as Fillets, bellies, back bones and Salmon heads are also available on request. Frozen in fixed weight cartons, 10 or 20kg.