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.) Commodity Code Description 03 03 55 00 - - Jack and horse mackerel (Trachurus spp.)