0302.89.50.52 - Sable fish (Anoplopoma fimbria)

This HTS subheading, 0302.89.50.52, specifically covers Sable fish, scientifically known as *Anoplopoma fimbria*, when imported in fresh or chilled condition. It falls under the broader category of "Other fish" within subheading 0302.89, which encompasses fish not otherwise specified in preceding subheadings of Chapter 3, excluding fillets and other fish meat of heading 0304.

Distinguishing this category from its siblings, it's important to note that while other subheadings at this level detail specific species such as smelts, cusk, shad, sturgeon, and ocean perch, 0302.89.50.52 is reserved exclusively for Sable fish. This ensures accurate tariff application for this particular economically significant species, which is valued for its rich flavor and oily texture.

As a leaf node, this subheading does not have further subdivisions. Therefore, the focus for classification purposes is on the accurate identification of Sable fish (*Anoplopoma fimbria*) and confirmation that the product is presented in its fresh or chilled state, excluding any processed forms like fillets or frozen products which would be classified under different HTS codes.