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 55 JACK AND HORSE MACKEREL (TRACHURUS SPP.), FROZEN Commodity Code Description 03 03 55 00 JACK AND HORSE MACKEREL (TRACHURUS SPP.), FROZEN