0304.83.50.10 - Greenland turbot (Greenland halibut) (Reinhardtius hippoglossoides)

This HTS classification, 0304.83.50.10, specifically covers frozen fillets of Greenland turbot, also known as Greenland halibut (Reinhardtius hippoglossoides). These are distinct from other flatfish fillets due to their species identification. The classification applies to the meat of this particular fish, processed into fillets and preserved by freezing for trade and customs purposes.

While this category falls under "Other" flat fish, it is crucial to distinguish it from its sibling entries. For example, 0304.83.50.15 pertains to sole, and 0304.83.50.20 relates to flounder. The defining characteristic for this classification is the specific species of fish, Greenland halibut, which possesses unique anatomical and commercial attributes that differentiate it from other flatfish.

As this is a leaf node, there are no further subdivisions within this specific code. Therefore, the classification is definitive for frozen fillets of Greenland turbot. Any variations in processing, such as being minced or preserved by other means (e.g., chilled, fresh), would necessitate classification under a different HTS code. The primary criterion for inclusion here is the frozen fillet form of the specified flatfish species.