0303.44Subheading
Fish; frozen, bigeye tunas (Thunnus obesus), excluding fillets, fish meat of 0304, and edible fish offal of subheadings 0303.91 to 0303.99
Section I — live animals; animal products
This is a 6-digit subheading — the most specific level of the international HS. Country tariff schedules extend it further; the US tariff lines (HTS) below refine it to 8–10 digits for duty purposes.
US tariff lines for this subheading are not in the bundled starter dataset yet — the full HTS schedule is coming soon. You can still search by code in the tariff simulator.