Section 01 Live animals; animal products. 03 Fish and crustaceans, mollusc and other aquatic invertebrates 03 03 Fish, frozen, (excl. those of 03.04) 03 03 54 Mackerel (Scromber scrombus, Scromber australasicus) 03 03 54 10 Mackerel (Scromber scrombus, Scromber australasicus) Commodity Code Description 03 03 54 10 00 Mackerel (Scromber scrombus, Scromber australasicus)