0302.89.50.40 - Cusk

This HTS classification, 0302.89.50.40, specifically covers "Cusk" when imported fresh or chilled. Cusk is a type of fish belonging to the cod family, scientifically known as *Brosme brosme*. This heading applies to the whole fish, as presented, and excludes any processed forms such as fillets or other fish meat.

To distinguish this from its sibling categories, it is important to note that while this sub-subheading is within a broader category for "Other fish," it is distinct from other specifically named species like smelts, shad, sturgeon, sable fish, and ocean perch. The "Other" designation at this level means that any fish not explicitly enumerated under the preceding subheadings within 0302.89.50 falls here, provided it meets the general criteria of fresh or chilled fish excluding edible offal and fillets.

As this is a leaf node in the HTS classification, there are no further subcategories. Therefore, correct classification under 0302.89.50.40 relies on accurately identifying the imported fish as Cusk. Importers should ensure the documentation clearly identifies the species, and that the product is presented in its fresh or chilled state, without filleting or other processing.