0302.21.00 - Halibut and Greenland turbot (Reinhardtius hippoglossoides, Hippoglossus hippoglossus, Hippoglossus stenolepis)

This HTS classification covers fresh or chilled halibut and Greenland turbot. These are distinct species of flatfish, scientifically identified as *Reinhardtius hippoglossoides* (Greenland turbot), *Hippoglossus hippoglossus* (Atlantic halibut), and *Hippoglossus stenolepis* (Pacific halibut). The classification applies to whole fish, whether gutted or ungutted, as long as they remain in a fresh or chilled state and have not undergone further processing beyond cleaning or heading.

This category is distinguished from its siblings by the specific species it enumerates. While 0302.22.00 covers Plaice, 0302.23.00 covers Sole, and 0302.24.00 covers Turbots, this heading specifically identifies halibut and Greenland turbot. The "Other" category (0302.29.01) is reserved for flatfish not explicitly listed in the preceding subheadings.

The subcategories within 0302.21.00 provide further specificity based on geographical origin. 0302.21.00.10 pertains to Atlantic halibut, while 0302.21.00.20 refers to Pacific halibut. The residual category, 0302.21.00.90, encompasses other qualifying fish, including Greenland turbot, and any halibut not specifically designated as Atlantic or Pacific. This granular classification aids in tracking trade flows and applying relevant trade policies.