Arctic char (Salvelinus alpinus) is not an Oncorhynchus or Salmo species, so it does not fall under the trout line (0303140000) or any of the Pacific or Atlantic salmon lines. Frozen whole or dressed Arctic char classifies under the residual Salmonidae NESOI code 0303190100. Importers should confirm species identification on supplier documentation to support this classification.

A commercial invoice or catch/aquaculture certificate that includes the scientific (Latin) species name is the most reliable classification support. Because this is a residual NESOI provision, CBP may request additional documentation to confirm the species does not fall under a more specific line. A binding ruling request can provide certainty for recurring shipments of uncommon salmonid species.