HEADING 0303

Fish, frozen, excluding fish fillets and other fish meat of heading 0304:

Part of Chapter 03 — Fish and Crustaceans, Section I.

Subheadings and tariff lines

0303D01Salmonidae, excluding edible fish offal of subheadings 0303.91 to 0303.99:
0303.11.00.00Sockeye salmon (red salmon) (Oncorhynchus nerka) 0303.12.00Other Pacific salmon (Oncorhynchus gorbuscha, Oncorhynchus keta, Oncorhynchus tschawytscha, Oncorhynchus kisutch, Oncorhynchus masou and Oncorhynchus rhodurus) 0303.12.00.12Chinook (king) 0303.12.00.22Chum (dog) 0303.12.00.32Pink (humpie) 0303.12.00.52Coho (silver) 0303.12.00.62Other 0303.13.00.00Atlantic salmon (Salmo salar) and Danube salmon (Hucho hucho) 0303.14.00.00Trout (Salmo trutta, Oncorhynchus mykiss, Oncorhynchus clarki, Oncorhynchus aguabonita, Oncorhynchus gilae, Oncorhynchus apache and Oncorhynchus chrysogaster) 0303.19.01.00Other
0303D02Tilapias(Oreochromis spp.), catfish (Pangasius spp., Silurus spp., Clarias spp.,Ictalurus spp.), carp (Cyprinus spp., Carassius spp., Ctenopharyngodonidellus, Hypophthalmichthys spp.,Cirrhinus spp., Mylopharyngodon piceus, Catlacatla, Labeo spp., Osteochilus hasselti, Leptobarbus hoeveni, Megalobrama spp.), eels (Anguilla spp.), Nile perch (Lates niloticus) and snakeheads (Channa spp.), excluding edible fishoffal of subheadings 0303.91 to 0303.99:
0303.23.00.00Tilapias (Oreochromis spp.) 0303.24.00Catfish (Pangasius spp., Silurus spp., Clarias spp., Ictalurus spp.) 0303.24.00.10Ictalurus spp. 0303.24.00.20Pangasius spp. including basa and tra 0303.24.00.50Other 0303.25.01.00Carp (Cyprinus spp., Carassius spp., Ctenopharyngodon idellus, Hypophthalmichthys spp., Cirrhinus spp., Mylopharyngodon piceus, Catla catla, Labeo spp., Osteochilus hasselti, Leptobarbus hoeveni, Megalobrama spp.) 0303.26.00.00Eels (Anguilla spp.) 0303.29.01Other 0303.29.01.10Nile perch 0303.29.01.50Other
0303D03Flat fish (Pleuronectidae, Bothidae, Cynoglossidae, Soleidae, Scophthalmidae and Citharidae), excluding edible fish offal of subheadings 0303.91 to 0303.99:
0303.31.00Halibut and Greenland turbot (Reinhardtius hippoglossoides, Hippoglossus hippoglossus, Hippoglossus stenolepis) 0303.31.00.10Atlantic halibut (Hippoglossus hippoglossus) 0303.31.00.20Pacific halibut (Hippoglossus stenolepis) 0303.31.00.30Greenland turbot (Greenland halibut) (Reinhardtius hippoglossoides) 0303.32.00.00Plaice (Pleuronectes platessa) 0303.33.00.00Sole (Solea spp.) 0303.34.00.00Turbots (Psetta maxima) 0303.39.01Other 0303.39.01.10Flounder 0303.39.01.20Rock sole (Pleuronectes bilineatus) 0303.39.01.30Yellowfin sole (Pleuronectes asper) 0303.39.01.95Other
0303D04Tunas (of the genus Thunnus), skipjack tuna (stripe-bellied bonito) (Katsuwonus pelamis), excluding edible fish offal of subheadings 0303.91 to 0303.99:
0303.41.00.00Albacore or longfinned tunas (Thunnus alalunga) 0303.42.00Yellowfin tunas (Thunnus albacares) 0303.42.00.20Whole fish
0303.42.00D05Other:
0303.42.00.40Head-on 0303.42.00.60Other 0303.43.00.00Skipjack tuna (stripe-bellied bonito) (Katsuwonus pelamis) 0303.44.00.00Bigeye tunas (Thunnus obesus) 0303.45.01Atlantic and Pacific bluefin tunas (Thunnus thynnus, Thunnus orientalis) 0303.45.01.10Thunnus thynnus 0303.45.01.50Thunnus orientalis 0303.46.00.00Southern bluefin tunas (Thunnus maccoyii) 0303.49.02.00Other
0303D06Herrings (Clupea harengus, Clupea pallasii), anchovies (Engraulis spp.), sardines (Sardina pilchardus, Sardinops spp.), sardinella (Sardinella spp.), brisling or sprats (Sprattus sprattus), mackerel (Scomber scombrus, Scomber australasicus, Scomber japonicus), Indian mackerels (Rastrelliger spp.), seerfishes (Scomberomorus spp.), jack and horse mackerel (Trachurus spp.), jacks, crevalles (Caranx spp.), cobia (Rachycentron canadum), silver pomfrets (Pampus spp.), Pacific saury (Cololabis saira), scads (Decapterus spp.), capelin (Mallotus villosus), swordfish (Xiphias gladius), Kawakawa (Euthynnus affinis), bonitos (Sarda spp.), marlins, sailfishes, spearfish (Istiophoridae), excluding edible fish offal of subheadings 0303.91 to 0303.99:
0303.51.00.00Herrings (Clupea harengus, Clupea pallasii) 0303.53.00.00Sardines (Sardina pilchardus, Sardinops spp.), sardinella (Sardinella spp.), brisling or sprats (Sprattus sprattus) 0303.54.00.00Mackerel (Scomber scombrus, Scomber australasicus, Scomber japonicus) 0303.55.00.00Jack and horse mackerel (Trachurus spp.) 0303.56.00.00Cobia (Rachycentron canadum) 0303.57.00Swordfish (Xiphias gladius) 0303.57.00.10Steaks 0303.57.00.90Other 0303.59.00.00Other
0303D07Fish of the families Bregmacerotidae, Euclichthyidae, Gadidae, Macrouridae, Melanonidae, Merlucciidae, Moridae and Muraenolepididae, excluding edible fish offal of subheadings 0303.91 to 0303.99:
0303.63.00Cod (Gadus morhua, Gadus ogac, Gadus macrocephalus) 0303.63.00.10Atlantic 0303.63.00.90Other 0303.64.00.00Haddock (Melanogrammus aeglefinus) 0303.65.00.00Coalfish (Pollachius virens) 0303.66.00.00Hake (Merluccius spp., Urophycis spp.) 0303.67.00.00Alaska pollock (Theragra chalcogramma) 0303.68.00.00Blue whitings (Micromesistius poutassou, Micromesistius australis) 0303.69.00.00Other
0303D08Other fish, excluding edible fish offal of subheadings 0303.91 to 0303.99:
0303.81.00Dogfish and other sharks 0303.81.00.11Dogfish (Squalus spp.) 0303.81.00.91Other 0303.82.00.00Rays and skates (Rajidae) 0303.83.00.00Toothfish (Dissostichus spp.) 0303.84.00.00Sea Bass (Dicentrachus spp.) 0303.89.00Other
0303.89.00D09Smelts:
0303.89.00.01Sea smelts 0303.89.00.04Other smelts 0303.89.00.10Cusk 0303.89.00.13Shad and sturgeon
0303.89.00D10Fresh-water fish:
0303.89.00.28Pike and pickerel 0303.89.00.31Perch and pike perch (including yellow pike) 0303.89.00.34Sauger 0303.89.00.37Whitefish 0303.89.00.40Tilapias, other than Oreochromis spp. 0303.89.00.43Other 0303.89.00.46Atka mackerel (Atkafish) (Pleurogrammus monopterygius) 0303.89.00.49Mullet 0303.89.00.52Monkfish (Lophius spp.) 0303.89.00.55Butterfish 0303.89.00.58Capelin 0303.89.00.61Sable fish (Anoplopoma fimbria) 0303.89.00.64Ocean perch 0303.89.00.67Snapper (Lutjanidae spp.) 0303.89.00.70Grouper 0303.89.00.80Other
0303D11Livers, roes, milt, fish fins, heads, tails, maws and other edible fish offal:
0303.91Livers, roes and milt: 0303.91.20.00Sturgeon roe 0303.91.40Other 0303.91.40.20Herring roe 0303.91.40.40Salmon roe 0303.91.40.50Alaska pollock (Theragra chalcogramma) roe 0303.91.40.60Mullet roe 0303.91.40.95Other 0303.92.00.00Shark fins 0303.99.00.00Other

Recent CBP rulings on heading 0303

N351549 August 15, 2025

The Tariff Classification and Country of Origin of Frozen Golden Pompano Fish
H331430 September 27, 2023

Country of Origin of Frozen Fish; Section 301 Measures
N334876 September 20, 2023

The tariff classification of Frozen Japanese Seabass from China
H330112 August 28, 2023

Revocation of NY N306583; Tariff Classification of Frozen Buri Fish Collar
N261257 February 27, 2015

The tariff classification of frozen fish (tilapia whole and fillet) from China
N210395 April 3, 2012

The tariff classification of frozen fish (snapper and grouper) from the Bahamas and Mexico.
N112298 July 13, 2010

The tariff classification of frozen, bone-in and partially de-boned fish from Vietnam.
B88780 August 29, 1997

The tariff classification of frozen fish from Argentina.
A82355 April 23, 1996

The tariff classification of capelin from Iceland.
812029 July 5, 1995

The tariff classification of lizard fish from Vietnam.
811063 June 5, 1995

The tariff classification of pomfret, snakehead, featherback,catfish, and carp from Vietnam.

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