Live ornamental freshwater fish are generally imported duty-free under HTS 0301110000, though traders should verify the current rate in the USITC Harmonized Tariff Schedule and check for applicable trade agreement benefits.

Live fish must enter through ports designated by USFWS as wildlife ports of entry, such as Los Angeles, Miami, New York, and Chicago, where wildlife inspectors can process the required Form 3-177 declarations.

Freshwater ornamental fish are classified under HTS 0301110000, while live marine ornamental fish fall under a separate subheading (0301190000). Mixed shipments must be itemized separately on the commercial invoice and entry documentation.