0304.81.50 - Other

This HTS category, 0304.81.50, specifically classifies frozen fillets of other fish, with a focus on certain types of salmon. It encompasses fresh, chilled, or frozen fish meat, whether minced or not, derived from Pacific salmon species such as *Oncorhynchus nerka* (sockeye), *Oncorhynchus gorbuscha* (pink), *Oncorhynchus keta* (chum), *Oncorhynchus tschawytscha* (chinook), *Oncorhynchus kisutch* (coho), *Oncorhynchus masou* (masu), and *Oncorhynchus rhodurus* (amago), as well as Atlantic salmon (*Salmo salar*) and Danube salmon (*Hucho hucho*). The "Other" description at this level indicates it serves as a residual category within the frozen fillets of other fish grouping, specifically for the named salmon species not covered by more granular sibling classifications.

Distinguishing this category from its sibling, 0304.81.10.00, is crucial. The sibling classification pertains to skinned fillets, frozen into blocks exceeding 4.5 kg, intended for subsequent mincing, grinding, or cutting into uniform pieces. In contrast, 0304.81.50 covers frozen fillets of the specified salmon types that do not meet these specific processing and weight requirements. This distinction allows for more precise tariff application based on the physical state and intended processing of the frozen fish product.

Within this category, further sub-classifications exist to refine the tariff treatment. The code 0304.81.50.10 is dedicated to Atlantic salmon (*Salmo salar*), recognizing its distinct market and potential trade considerations. The remaining salmon species within the scope of 0304.81.50 are then captured under the residual subcategory 0304.81.50.90, labeled as "Other." This hierarchical structure ensures that imported frozen salmon fillets are accurately classified according to their species and specific preparation.