0304.55.00.00 - Toothfish (Dissostichus spp.)

This HTS category, 0304.55.00.00, specifically covers toothfish (belonging to the genus *Dissostichus*). These are a type of cold-water marine fish, often referred to as Patagonian toothfish or Chilean sea bass. The classification pertains to toothfish that are presented fresh or chilled.

Distinguishing this category from its siblings, it is important to note that while other categories at this level cover broad groups of fish like salmonids, swordfish, or dogfish and sharks, 0304.55.00.00 is narrowly focused on the specific genus *Dissostichus*. It differentiates itself from categories for tilapias, catfish, carp, eels, Nile perch, snakeheads, and certain gadoid families by its unique taxonomic identification.

As a leaf node within the HTS classification system, 0304.55.00.00 does not have further subcategories. This means that once a product is identified as toothfish (Dissostichus spp.) and is in a fresh or chilled state, it is fully classified under this specific code. The classification hinges on the precise identification of the fish species.