Katsuwonus pelamis — the species covered by 0303430000 — is commonly called both skipjack tuna and stripe-bellied bonito in trade, but it is a distinct species from true bonito (Sarda spp.), which falls under a different HTS heading. Importers should ensure that species identification on the commercial invoice and any catch documentation matches the scientific name Katsuwonus pelamis to avoid misclassification between tuna and bonito headings.

Mexico's Pacific coast supports an active purse-seine fleet targeting skipjack in the Eastern Tropical Pacific, and its geographic proximity reduces cold-chain transit time and freight costs to US Gulf and West Coast ports. Mexican-origin skipjack may also benefit from USMCA preferential tariff treatment, though importers should verify that the specific goods meet the applicable rules of origin before claiming preference.