Section 01 LIVE ANIMALS; ANIMAL PRODUCTS. 03 FISH AND CRUSTACEANS, MOLLUSCS AND OTHER AQUATIC INVERTEBRATES. 03 03 FISH, FROZEN, EXCLUDING FISH FILLETS AND OTHER FISH MEAT OF HEADING 0304 03 03 54 MACKEREL (SCOMBER SCOMBRUS/ AUSTRALASICUS/ JAPONICUS), FOR PROCESSING, FROZEN Commodity Code Description 03 03 54 10 MACKEREL (SCOMBER SCOMBRUS/ AUSTRALASICUS/ JAPONICUS), FOR PROCESSING, FROZEN 03 03 54 90 OTHER MACKEREL (SCOMBER SCOMBRUS/ AUSTRALASICUS/ JAPONICUS), FROZEN