0303.39.01 - Other

This HTS category, 0303.39.01, encompasses "Other" flat fish that are frozen and are not fillets or other fish meat of heading 0304. It is a residual category for flat fish not specifically enumerated in preceding subheadings within the 0303.3x range. This means it captures frozen flat fish species that do not fall under the specific classifications for Halibut, Greenland turbot, Plaice, Sole, or Turbots.

The key differentiator for this "Other" category is the absence of specific enumeration for the species. While siblings like 0303.31.00 (Halibut and Greenland turbot) and 0303.33.00.00 (Sole) are designated for distinct, named species, 0303.39.01 serves as a catch-all for other flat fish varieties not otherwise classified within this group. This ensures comprehensive coverage of frozen flat fish within Chapter 3.

Within this "Other" category, further subdivisions exist to refine the classification of specific species of flat fish. Subheadings such as 0303.39.01.10 (Flounder), 0303.39.01.20 (Rock sole), and 0303.39.01.30 (Yellowfin sole) provide more granular classification for commonly traded species. A final residual subheading, 0303.39.01.95, exists to capture any remaining "other" flat fish not specifically identified even within these further breakdowns.