0304.49.01.20 - Atlantic ocean perch

This classification covers fresh or chilled fillets of fish not specifically enumerated under other subheadings within the "other" category for fresh or chilled fish fillets. It specifically includes Atlantic Ocean Perch, a type of marine fish belonging to the *Sebastes* genus, when presented in fillet form, without bones or skin, and maintained in a fresh or chilled state.

Unlike the sibling categories, which are dedicated to specific types of fish like "fresh-water fish," or explicitly list other species like "Cusk," this heading is for those other species of fish fillets that do not fit into more precise classifications. The primary distinction lies in the species of fish and its origin, differentiating it from freshwater varieties and other specifically named saltwater species.

As this is a leaf node, there are no further subdivisions under this specific code. Therefore, classification here relies on the accurate identification of the fish species as Atlantic Ocean Perch and confirmation that the product meets the criteria of being a fresh or chilled fillet, not minced, and not specifically classified elsewhere within Chapter 3.