Albacore (Thunnus alalunga) is classified at 0303410000 specifically because of its species identity, not its presentation. Whole, headed-and-gutted, and other non-fillet dressed forms all fall under this single 10-digit line, whereas fillets and fish meat are redirected to heading 0304. Misidentifying the species at entry — for example, confusing albacore with bigeye or yellowfin — is a common classification error that can trigger penalty proceedings.

Beyond FDA seafood HACCP compliance, importers must comply with Country of Origin Labeling (COOL) requirements for fish sold at retail. Dolphin-safe labeling under the Marine Mammal Protection Act is voluntary but commercially significant; the label requires documentation of fishing method and area of capture. Importers should obtain and retain vessel-level catch documentation to support both COOL and dolphin-safe claims.