Rays and skates of family Rajidae have their own dedicated HS6 heading (030497) rather than being grouped with general frozen fish fillets or fish meat. The single US tariff line 0304970000 captures all frozen Rajidae not covered by more specific provisions, distinguishing them from flatfish, groundfish, and other elasmobranch categories.

Importers must file an FDA Prior Notice for all seafood shipments and ensure the foreign processor is registered with FDA. A seafood HACCP plan covering the frozen ray or skate product must be on file, and the shipment is subject to FDA examination at the port of entry. Country-of-origin labeling requirements also apply at retail.