Chapter 03 covers fish, crustaceans, molluscs and other aquatic invertebrates. This chapter includes aquatic products that are live, fresh, chilled, frozen, dried, salted, smoked, or otherwise preserved, but excludes cooked or further processed aquatic products (classified under Chapter 16). The animals of this chapter may be whole, headless, sliced, minced, etc., but must retain their original essential characteristics. Heading 0303 covers frozen fish, but excludes fish fillets and other fish meat (classified under 0304), fish livers and roes (classified under 0305), and fresh or chilled fish (classified under 0302). Fish under this heading must be frozen to maintain their original state, typically for long-term storage and transportation. Frozen fish may be whole, headless, gutted, or cut into blocks, but must not be cooked or further processed. The first 2 digits 03 represent Chapter 3: Fish, crustaceans, molluscs and other aquatic invertebrates. Digits 3-4, 03, indicate heading 0303: frozen fish, excluding fish fillets and other fish meat of 0304. Digits 5-6, 62, indicate subheading 030362: frozen catfish (including channel catfish, catfish, etc.), specifically covering Siluriformes fish. This subheading was split from the original 0303.79 and other subheadings in the 2017 HS revision to separately list catfish, reflecting their trade importance. The coding hierarchy is: Chapter (03) → Heading (0303) → Subheading (030362), with each level progressively refining the scope of goods. Frozen catfish is classified under 030362 because it meets the definition of heading 0303 'frozen fish' and subheading 030362 explicitly lists 'catfish'. Differences from adjacent codes: 0302 is fresh or chilled catfish, 0304 is fresh or chilled catfish fillets, 0305 is smoked or salted catfish, while 0303.62 specifically refers to frozen whole or gutted catfish, not sliced or otherwise further processed.

Product Name: The specific name of the declared commodity, such as 'frozen catfish' or 'frozen channel catfish', should use standardized Chinese or English trade names. Latin Scientific Name: The Latin scientific name of the catfish, such as Ictalurus punctatus (channel catfish) or Clarias spp., used for accurate classification. Method of Production or Preservation: Indicate 'frozen', and note whether headed, gutted, skinned, etc. State: Describe the overall state of the fish, such as whole, headless, gutted, cut into blocks, etc., but not fillets. Specifications: Weight per carton, weight range per fish, etc., used for statistics and inspection. Brand: If there is a brand, declare the brand name; if no brand, indicate 'none'. Packaging Method: Description of inner and outer packaging, such as '10kg/carton, vacuum-packed in plastic bags'. Country of Origin: The country (region) of origin of the goods, affecting tariffs and trade policies. Product Name: Frozen Catfish (Channel Catfish); Latin Scientific Name: Ictalurus punctatus; Method of Production or Preservation: Frozen, headed and gutted; State: Whole; Specifications: 500-800g per fish, 10kg/carton; Brand: None; Packaging Method: Inner plastic bag vacuum, outer carton; Country of Origin: Vietnam. Incorrectly classifying frozen catfish fillets under 030362, which should actually be classified under 0304. Failing to provide the Latin scientific name, making it impossible to distinguish catfish from other fish. Declaring fresh or chilled catfish as frozen, incorrectly classified under 030362.

Core classification criteria: First, the product must belong to Chapter 3 aquatic products; second, it must be frozen and not cooked or further processed; third, it must be catfish (Siluriformes) and not sliced or made into fillets. If it is fillets, classify under 0304; if fresh or chilled, classify under 0302; if smoked, classify under 0305. Additionally, confirm the Latin scientific name to avoid confusion with similar fish. 0302.71 Fresh or chilled catfish: 0302.71 is fresh or chilled catfish, not frozen; 030362 is frozen catfish, with the core difference being preservation temperature and processing method. 0304.31 Fresh or chilled catfish fillets: 0304.31 is fresh or chilled catfish fillets, already sliced; 030362 is frozen whole or gutted catfish, not sliced. 0304.32 Frozen catfish fillets: 0304.32 is frozen catfish fillets, already sliced; 030362 is frozen whole or gutted catfish, not sliced. 0305.43 Smoked catfish: 0305.43 is smoked catfish, processed by smoking; 030362 is frozen, not smoked. 0303.89 Other frozen fish: 0303.89 is other frozen fish, excluding catfish; 030362 specifically refers to frozen catfish, explicitly listed in the subheading. Confirm whether the product is frozen. Confirm whether it is catfish (Siluriformes). Confirm whether it is not sliced or made into fillets. Confirm whether the Latin scientific name is accurate. Confirm whether it has not undergone further processing such as smoking or salting.

How to query the HS code for frozen catfish? First determine that the product is frozen fish, then find the catfish subheading based on the species. In the HS code, frozen catfish is classified under 030362. It can be confirmed through customs tariff schedules, HS code query websites, or by consulting a customs broker. Note the distinction between fresh/chilled, fillets, and other states. What is the difference in HS codes between frozen catfish and frozen catfish fillets? Frozen catfish (whole or gutted) is classified under 030362, while frozen catfish fillets are classified under 0304.32. The main difference is whether it is sliced. Fillets are cut fish meat, while 030362 requires the fish to remain in its whole form, not sliced. What elements are required to declare frozen catfish? Product name, Latin scientific name, method of production and preservation, state, specifications, brand, packaging method, country of origin, etc. are required. The Latin scientific name is particularly important for accurate classification. Additionally, ensure the state description is 'whole' or 'gutted', not 'fillet'. What is the difference in HS codes between frozen catfish and fresh catfish? Fresh or chilled catfish is classified under 0302.71, and frozen catfish is classified under 030362. The difference lies in the preservation temperature: fresh/chilled fish is not frozen, while frozen fish has undergone freezing. The preservation method must be clearly stated during declaration. If frozen catfish is smoked, which code should it be classified under? Smoked catfish is classified under 0305.43, not 030362. 030362 only applies to frozen, not smoked. If smoked, even if frozen, it should be classified under 0305. How to determine the Latin scientific name of frozen catfish? The Latin scientific name should be determined based on the actual species, common ones include Ictalurus punctatus (channel catfish), Clarias spp. (walking catfish), etc. Refer to fish taxonomy references or the scientific name provided by the supplier to ensure accuracy. How to query the import tariff for frozen catfish? Tariff rates change, so the latest customs tariff schedule must be queried. The applicable rate can be determined based on the country of origin, trade agreements, etc. It is recommended to use the General Administration of Customs website or consult a customs broker for real-time information. What are the common errors in classifying frozen catfish? Common errors include: classifying fillets under 030362, classifying fresh/chilled catfish under 030362, failing to provide the Latin scientific name resulting in inability to distinguish species, classifying smoked catfish under 030362. Carefully verify the product state and processing method.