0303.33.00.00 - Sole (Solea spp.)

This HTS category, 0303.33.00.00, specifically classifies frozen sole, belonging to the genus *Solea*. This classification falls under the broader heading of frozen fish, excluding fillets and other fish meat, and more specifically within the group of flat fish. The key characteristic for this sub-heading is the identification of the fish as "sole" and its genus.

It is important to distinguish this category from its siblings. For example, 0303.31.00 covers halibut and Greenland turbot, which are distinct species of flat fish. Similarly, 0303.32.00.00 is reserved for plaice, and 0303.34.00.00 for turbots, all of which are other types of flat fish with their own specific classifications. This category focuses exclusively on sole species.

As a leaf node within the HTS structure, 0303.33.00.00 has no further subcategories. Therefore, classification within this code relies solely on the accurate identification of the imported product as frozen sole belonging to the *Solea* genus. Any frozen fish that are not sole, or are fillets or other meat of sole (which would fall under 0304), would be classified elsewhere within the Harmonized Tariff Schedule.