Frozen Crustaceans, NESOI (Including Crawfish and Krill)

Species identification is the controlling factor. Freshwater crawfish (crayfish) classify under 0306190110; Antarctic krill under 0306190130. Products that are neither of those species, nor classifiable under other specific crustacean headings, fall into the general NESOI lines (0306190161 or 0306190500). A licensed customs broker or CBP binding ruling can resolve ambiguous species cases.

Beyond FDA prior notice and HACCP compliance, Antarctic krill fisheries operate under CCAMLR (Commission for the Conservation of Antarctic Marine Living Resources) management. While CCAMLR catch documentation is not a US Customs entry requirement per se, buyers sourcing from Norway or other CCAMLR-member flag states should confirm catch documentation schemes are in order to satisfy due-diligence and retailer sustainability requirements.