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 44 Tunas, skipjack tuna, excl. 0303.91.00 to 0303.99.00: Bigeye tunas (Thunnus obesus) Commodity Code Description 03 03 44 00 Tunas, skipjack tuna, excl. 0303.91.00 to 0303.99.00: Bigeye tunas (Thunnus obesus)