1604.13 - Sardines, sardinella and brisling or sprats:

This HTS category, 1604.13, specifically encompasses preserved fish belonging to the sardine, sardinella, and brisling or sprats species. These are whole or in pieces, but not minced, prepared and preserved in a manner consistent with Chapter 16 of the Harmonized Tariff Schedule, which deals with preparations of fish. This classification is distinct from other headings within 1604.1 that cover different species of fish, such as salmon (1604.11), herrings (1604.12), tunas, skipjack tuna and bonito (1604.14), and mackerel (1604.15.00.00).

The key differentiator for this heading lies in the specific identification of the aquatic creature being preserved. While siblings focus on separate genera and species, 1604.13 is reserved for those fish commonly known as sardines, sardinellas, and the smaller, schooling fish referred to as brisling or sprats. The method of preservation, such as canning, is generally secondary to the species identification for this particular sub-heading.

Within this category, further distinctions are made based on the preservation medium and packaging. The subcategories allow for the segregation of these specific fish when preserved in oil and packed in airtight containers, distinguishing them from those preserved using other methods or in different types of packaging. This granular approach ensures accurate tariff application based on the specific presentation of the product.