Frozen Fish Fillets, Not Elsewhere Specified (NESOI)

Serving as the catch-all heading for frozen fish fillets not covered by species-specific headings, this category encompasses a wide range of products from Atlantic ocean perch (rosefish) and orange roughy to mahi-mahi (dolphin fish), pike, perch, and pickerel. The US schedule is unusually granular here, with 16 active 10-digit lines distinguishing freshwater species (yellow perch, pike, sauger, pickerel), Atlantic and Pacific ocean perch, and orange roughy from the general NESOI residual (0304895091). Japan leads US supply under this heading, followed by Vietnam and Indonesia. Correct species identification is essential because misclassification between a named line and the residual NESOI line is a common audit finding. FDA prior notice is required; consult a licensed customs broker or FDA-registered importer of record.