1504.20 - Fats and oils and their fractions, of fish, other than liver oils:

This HTS category, 1504.20, encompasses crude, refined, or otherwise processed fats and oils derived specifically from fish, excluding their liver oils. This includes a wide array of edible and industrial oils obtained from various fish species that are not marine mammals. The key defining characteristic is the origin of the fat or oil; it must be from a fish and not from its liver.

It is crucial to distinguish this category from its siblings. Code 1504.10 specifically covers fish-liver oils and their fractions, which possess distinct properties and often different applications, particularly in pharmaceuticals and dietary supplements. Furthermore, 1504.30.00.00 addresses fats and oils exclusively derived from marine mammals, such as seals or whales, which are biologically and compositionally different from fish oils.

The subcategories within 1504.20 further refine the classification based on the specific type of fish from which the oil is derived. This allows for greater specificity in tracking and regulating trade in these commodities. For instance, 1504.20.20.00 pertains to cod oils, 1504.20.40.00 relates to herring oils, and 1504.20.60 groups together all other fish oils not specifically enumerated, providing a comprehensive classification structure for fish-derived fats and oils.