This file consists of the classification used for this online version.
| 1 Class Myxini |
| | 1 Order Myxiniformes |
| | | | 1 | Family Myxinidae |
| | | | | 1 Subfamily Myxininae |
| | | | | 2 Subfamily Eptatretinae |
| 3 Class Petromyzonti |
| | 5 Order Petromyzontiformes |
| | | | 2 | Family Petromyzontidae |
| | | | 2.1 | Family Geotriidae |
| | | | 2.2 | Family Mordaciidae |
| 4 Class Cladistii |
| | 7 Order Polypteriformes |
| | | | 32 | Family Polypteridae |
| 5 Class Elasmobranchii |
| | 6 Order Hexanchiformes |
| | | | 7 | Family Hexanchidae |
| | | | 7.6 | Family Chlamydoselachidae |
| | 7 Order Heterodontiformes |
| | | | 8 | Family Heterodontidae |
| | 8 Order Orectolobiformes |
| | | | 9 | Family Rhincodontidae |
| | | | 10.1 | Family Parascylliidae |
| | | | 10.2 | Family Brachaeluridae |
| | | | 10.3 | Family Orectolobidae |
| | | | 10.4 | Family Hemiscylliidae |
| | | | 10.5 | Family Stegostomatidae |
| | | | 10.6 | Family Ginglymostomatidae |
| | 8.5 Order Lamniformes |
| | | | 11 | Family Odontaspididae |
| | | | 11.2 | Family Mitsukurinidae |
| | | | 11.3 | Family Pseudocarchariidae |
| | | | 12 | Family Lamnidae |
| | | | 12.1 | Family Megachasmidae |
| | | | 12.2 | Family Cetorhinidae |
| | | | 12.3 | Family Alopiidae |
| | 8.7 Order Carcharhiniformes |
| | | | 13.1 | Family Pentanchidae |
| | | | 13.2 | Family Scyliorhinidae |
| | | | 13.3 | Family Proscylliidae |
| | | | 13.4 | Family Pseudotriakidae |
| | | | 14.1 | Family Leptochariidae |
| | | | 14.2 | Family Triakidae |
| | | | | 1 Subfamily Triakinae |
| | | | | 2 Subfamily Galeorhininae |
| | | | 14.4 | Family Hemigaleidae |
| | | | 14.5 | Family Carcharhinidae |
| | | | 14.6 | Family Sphyrnidae |
| | 9 Order Squaliformes |
| | | | 15 | Family Dalatiidae |
| | | | 15.1 | Family Etmopteridae |
| | | | 15.2 | Family Somniosidae |
| | | | 15.3 | Family Oxynotidae |
| | | | 15.5 | Family Centrophoridae |
| | | | 16 | Family Squalidae |
| | | | 16.1 | Family Echinorhinidae |
| | 9.5 Order Pristiophoriformes |
| | | | 17 | Family Pristiophoridae |
| | 9.7 Order Squatiniformes |
| | | | 18 | Family Squatinidae |
| | 9.8 Order Pristiformes |
| | | | 19 | Family Pristidae |
| | 10 Order Torpediniformes |
| | | | 20.3 | Family Narkidae |
| | | | 20.4 | Family Narcinidae |
| | | | 20.5 | Family Hypnidae |
| | | | 20.6 | Family Torpedinidae |
| | 10.5 Order Rajiformes |
| | | | 21 | Family Rhinobatidae |
| | | | | 1 Subfamily Rhinobatinae |
| | | | | 2 Subfamily Rhynchobatinae |
| | | | | 3 Subfamily Rhininae |
| | | | | 4 Subfamily Platyrhininae |
| | | | 21.5 | Family Arhynchobatidae |
| | | | 21.7 | Family Crurirajidae |
| | | | 22 | Family Rajidae |
| | | | 22.1 | Family Anacanthobatidae |
| | 10.6 Order Myliobatiformes |
| | | | 22.2 | Family Plesiobatidae |
| | | | 22.3 | Family Hexatrygonidae |
| | | | 23.1 | Family Dasyatidae |
| | | | 23.2 | Family Gymnuridae |
| | | | 23.3 | Family Myliobatidae |
| | | | | 1 Subfamily Myliobatinae |
| | | | | 2 Subfamily Rhinopterinae |
| | | | | 3 Subfamily Mobulinae |
| | | | 23.4 | Family Urolophidae |
| | | | 23.5 | Family Potamotrygonidae |
| | | | 23.6 | Family Urotrygonidae |
| 6 Class Holocephali |
| | 1 Order Chimaeriformes |
| | | | 3 | Family Callorhinchidae |
| | | | 4 | Family Chimaeridae |
| | | | 5 | Family Rhinochimaeridae |
| 8 Class Actinopteri |
| | 7.5 Order Acipenseriformes |
| | | | 33 | Family Acipenseridae |
| | | | 34 | Family Polyodontidae |
| | 18 Order Lepisosteiformes |
| | | | 35 | Family Lepisosteidae |
| | 22 Order Amiiformes |
| | | | 36 | Family Amiidae |
| | 29 Order Osteoglossiformes |
| | | | 37 | Family Osteoglossidae |
| | | | 37.5 | Family Arapaimidae |
| | | | 38 | Family Pantodontidae |
| | | | 39 | Family Hiodontidae |
| | | | 40 | Family Notopteridae |
| | | | 41 | Family Mormyridae |
| | | | 42 | Family Gymnarchidae |
| | 30 Order Elopiformes |
| | | | 43 | Family Elopidae |
| | | | 44 | Family Megalopidae |
| | 30.5 Order Albuliformes |
| | | | 45 | Family Albulidae |
| | | | | 1 Subfamily Albulinae |
| | | | | 2 Subfamily Pterothrissinae |
| | 31 Order Notacanthiformes |
| | | | 46 | Family Halosauridae |
| | | | 47 | Family Notacanthidae |
| | 32 Order Anguilliformes |
| | | | 48.5 | Family Protanguillidae |
| | | | 49 | Family Anguillidae |
| | | | 50 | Family Heterenchelyidae |
| | | | 51 | Family Moringuidae |
| | | | 52 | Family Chlopsidae |
| | | | 53 | Family Myrocongridae |
| | | | 54 | Family Muraenidae |
| | | | | 1 Subfamily Uropterygiinae |
| | | | | 2 Subfamily Muraeninae |
| | | | 57 | Family Synaphobranchidae |
| | | | | 1 Subfamily Ilyophinae |
| | | | | 2 Subfamily Synaphobranchinae |
| | | | | 3 Subfamily Simenchelyinae |
| | | | 58 | Family Ophichthidae |
| | | | | 1 Subfamily Myrophinae |
| | | | | 2 Subfamily Ophichthinae |
| | | | 60 | Family Colocongridae |
| | | | 62 | Family Congridae |
| | | | | 1 Subfamily Congrinae |
| | | | | 2 Subfamily Bathymyrinae |
| | | | | 3 Subfamily Heterocongrinae |
| | | | 62.5 | Family Muraenesocidae |
| | | | 63 | Family Derichthyidae |
| | | | 63.5 | Family Nemichthyidae |
| | | | 64 | Family Serrivomeridae |
| | | | 64.5 | Family Nettastomatidae |
| | 33 Order Saccopharyngiformes |
| | | | 64.7 | Family Cyematidae |
| | | | 65 | Family Saccopharyngidae |
| | | | 66 | Family Eurypharyngidae |
| | | | 67 | Family Monognathidae |
| | 34 Order Clupeiformes |
| | | | 68 | Family Denticipitidae |
| | | | 69 | Family Clupeidae |
| | | | 69.5 | Family Dussumieriidae |
| | | | 70 | Family Engraulidae |
| | | | 71 | Family Chirocentridae |
| | | | 71.5 | Family Pristigasteridae |
| | | | 71.6 | Family Sundasalangidae |
| | 35 Order Gonorynchiformes |
| | | | 72 | Family Chanidae |
| | | | 73 | Family Gonorynchidae |
| | | | 74 | Family Kneriidae |
| | | | 75 | Family Phractolaemidae |
| | 36 Order Cypriniformes |
| | | | 76 | Family Cyprinidae |
| | | | | 1 Subfamily Acheilognathinae |
| | | | | 2 Subfamily Cultrinae |
| | | | | 3 Subfamily Cyprininae |
| | | | | 4 Subfamily Barbinae |
| | | | | 5 Subfamily Labeoninae |
| | | | | 6 Subfamily Squaliobarbinae |
| | | | | 7 Subfamily Tincinae |
| | | | | 8 Subfamily Xenocypridinae |
| | | | | 9 Subfamily Gobioninae |
| | | | | 11 Subfamily Leuciscinae |
| | | | | 12 Subfamily Danioninae |
| | | | | 13 Subfamily ex-danioninae |
| | | | | 14 Subfamily No subfamily |
| | | | | 15 Subfamily Alburninae |
| | | | | 17 Subfamily Leptobarbinae |
| | | | | 20 Subfamily Oxygastrinae |
| | | | 77 | Family Psilorhynchidae |
| | | | 77.5 | Family Cobitidae |
| | | | | 1 Subfamily Botiinae |
| | | | | 2 Subfamily Cobitinae |
| | | | 78 | Family Balitoridae |
| | | | 78.1 | Family Nemacheilidae |
| | | | 78.2 | Family Serpenticobitidae |
| | | | 78.3 | Family Vaillantellidae |
| | | | 79 | Family Ellopostomatidae |
| | | | 79.5 | Family Barbuccidae |
| | | | 80 | Family Gyrinocheilidae |
| | | | 81 | Family Catostomidae |
| | 37 Order Characiformes |
| | | | 82 | Family Citharinidae |
| | | | 82.1 | Family Distichodontidae |
| | | | 82.5 | Family Alestidae |
| | | | 82.7 | Family Hepsetidae |
| | | | 83 | Family Hemiodontidae |
| | | | 83.2 | Family Parodontidae |
| | | | 85 | Family Curimatidae |
| | | | 85.5 | Family Prochilodontidae |
| | | | 85.6 | Family Anostomidae |
| | | | 85.7 | Family Chilodontidae |
| | | | 86 | Family Erythrinidae |
| | | | 87 | Family Lebiasinidae |
| | | | | 1 Subfamily Lebiasininae |
| | | | | 2 Subfamily Pyrrhulininae |
| | | | 88 | Family Gasteropelecidae |
| | | | 89 | Family Ctenoluciidae |
| | | | 90 | Family Acestrorhynchidae |
| | | | | 1 Subfamily Acestrorhynchinae |
| | | | | 2 Subfamily Roestinae |
| | | | | 18 Subfamily Heterocharacinae |
| | | | 90.5 | Family Cynodontidae |
| | | | | 1 Subfamily Cynodontinae |
| | | | 90.8 | Family Serrasalmidae |
| | | | 91 | Family Characidae |
| | | | | 6 Subfamily Stethaprioninae |
| | | | | 11 Subfamily Aphyocharacinae |
| | | | | 12 Subfamily Characinae |
| | | | | 13 Subfamily Tetragonopterinae |
| | | | | 14 Subfamily Rhoadsiinae |
| | | | | 15 Subfamily Cheirodontinae |
| | | | | 19 Subfamily Jupiaba clade |
| | | | | 20 Subfamily Pristellinae |
| | | | | 21 Subfamily Astyanax clade |
| | | | | 22 Subfamily Acestrorhamphinae |
| | | | | 23 Subfamily Nematobrycon clade |
| | | | | 24 Subfamily Gymnocharacinae |
| | | | | 25 Subfamily Aphyoditeinae |
| | | | | 26 Subfamily Stevardiinae |
| | | | | 27 Subfamily Pseudochalceinae |
| | | | 91.1 | Family Bryconidae |
| | | | | 10 Subfamily Bryconinae |
| | | | | 16 Subfamily Salmininae |
| | | | 91.2 | Family Triportheidae |
| | | | | 1 Subfamily Triportheinae |
| | | | | 7 Subfamily Agoniatinae |
| | | | | 8 Subfamily Clupeacharacinae |
| | | | 91.3 | Family Iguanodectidae |
| | | | | 9 Subfamily Iguanodectinae |
| | | | | 17 Subfamily Bryconops clade |
| | | | 91.4 | Family Chalceidae |
| | | | 91.5 | Family Crenuchidae |
| | | | | 1 Subfamily Crenuchinae |
| | | | | 2 Subfamily Characidiinae |
| | 38 Order Siluriformes |
| | | | 92 | Family Diplomystidae |
| | | | 92.1 | Family Lacantuniidae |
| | | | 93 | Family Ictaluridae |
| | | | 93.5 | Family Horabagridae |
| | | | 94 | Family Bagridae |
| | | | 95 | Family Cranoglanididae |
| | | | 95.5 | Family Austroglanididae |
| | | | 96 | Family Siluridae |
| | | | 96.5 | Family Kryptoglanidae |
| | | | 97 | Family Schilbeidae |
| | | | 98 | Family Pangasiidae |
| | | | 99 | Family Amblycipitidae |
| | | | 100 | Family Amphiliidae |
| | | | | 1 Subfamily Amphiliinae |
| | | | | 2 Subfamily Leptoglaninae |
| | | | | 3 Subfamily Doumeinae |
| | | | 101 | Family Akysidae |
| | | | 102 | Family Sisoridae |
| | | | | 1 Subfamily Sisorinae |
| | | | | 2 Subfamily Glyptosterninae |
| | | | 102.1 | Family Erethistidae |
| | | | 103 | Family Clariidae |
| | | | 104 | Family Heteropneustidae |
| | | | 104.1 | Family Claroteidae |
| | | | | 1 Subfamily Claroteinae |
| | | | | 2 Subfamily Auchenoglanidinae |
| | | | 105 | Family Chacidae |
| | | | 106 | Family Olyridae |
| | | | 107 | Family Malapteruridae |
| | | | 108 | Family Ariidae |
| | | | | 1 Subfamily Galeichthyinae |
| | | | | 2 Subfamily Ariinae |
| | | | | 3 Subfamily Bagreinae |
| | | | 108.5 | Family Anchariidae |
| | | | 109 | Family Plotosidae |
| | | | 110 | Family Mochokidae |
| | | | | 1 Subfamily Chiloglanidinae |
| | | | | 2 Subfamily Mochokinae |
| | | | 111 | Family Doradidae |
| | | | 112 | Family Auchenipteridae |
| | | | | 1 Subfamily Centromochlinae |
| | | | | 2 Subfamily Auchenipterinae |
| | | | 113 | Family Pimelodidae |
| | | | 113.1 | Family Pseudopimelodidae |
| | | | 113.2 | Family Heptapteridae |
| | | | 116 | Family Cetopsidae |
| | | | | 1 Subfamily Cetopsinae |
| | | | | 2 Subfamily Helogeninae |
| | | | 118 | Family Aspredinidae |
| | | | 118.1 | Family Nematogenyidae |
| | | | 119 | Family Trichomycteridae |
| | | | | 1 Subfamily Sarcoglanidinae |
| | | | | 2 Subfamily Trichomycterinae |
| | | | | 3 Subfamily Copionodontinae |
| | | | | 4 Subfamily Trichogeninae |
| | | | | 5 Subfamily Vandelliinae |
| | | | | 6 Subfamily Stegophilinae |
| | | | | 7 Subfamily Tridentinae |
| | | | | 8 Subfamily Glanapteryginae |
| | | | 120 | Family Callichthyidae |
| | | | | 1 Subfamily Callichthyinae |
| | | | | 2 Subfamily Corydoradinae |
| | | | 121 | Family Loricariidae |
| | | | | 1 Subfamily Lithogeninae |
| | | | | 2 Subfamily Neoplecostominae |
| | | | | 3 Subfamily Hypoptopomatinae |
| | | | | 4 Subfamily Loricariinae |
| | | | | 5 Subfamily Hypostominae |
| | | | | 6 Subfamily Ancistrinae |
| | | | | 8 Subfamily Delturinae |
| | | | 121.5 | Family Scoloplacidae |
| | | | 122 | Family Astroblepidae |
| | 39 Order Gymnotiformes |
| | | | 123.1 | Family Sternopygidae |
| | | | 123.2 | Family Apteronotidae |
| | | | 123.3 | Family Rhamphichthyidae |
| | | | 123.4 | Family Hypopomidae |
| | | | 123.5 | Family Gymnotidae |
| | 39.1 Order Esociformes |
| | | | 129 | Family Esocidae |
| | | | 130 | Family Umbridae |
| | 40 Order Osmeriformes |
| | | | 131 | Family Argentinidae |
| | | | 131.5 | Family Microstomatidae |
| | | | 132 | Family Bathylagidae |
| | | | 133 | Family Opisthoproctidae |
| | | | 134 | Family Alepocephalidae |
| | | | 135 | Family Platytroctidae |
| | | | 135.5 | Family Leptochilichthyidae |
| | | | 136 | Family Lepidogalaxiidae |
| | | | 137 | Family Osmeridae |
| | | | 138 | Family Plecoglossidae |
| | | | 139 | Family Salangidae |
| | | | 141 | Family Retropinnidae |
| | | | | 1 Subfamily Retropinninae |
| | | | | 2 Subfamily Prototroctinae |
| | | | 142 | Family Galaxiidae |
| | | | | 1 Subfamily Aplochitoninae |
| | | | | 2 Subfamily Galaxiinae |
| | 40.1 Order Salmoniformes |
| | | | 143 | Family Salmonidae |
| | | | | 1 Subfamily Coregoninae |
| | | | | 2 Subfamily Thymallinae |
| | | | | 3 Subfamily Salmoninae |
| | 41 Order Stomiiformes |
| | | | 144 | Family Gonostomatidae |
| | | | 145 | Family Sternoptychidae |
| | | | | 1 Subfamily Maurolicinae |
| | | | | 2 Subfamily Sternoptychinae |
| | | | 146 | Family Phosichthyidae |
| | | | 147 | Family Stomiidae |
| | | | | 1 Subfamily Chauliodontinae |
| | | | | 2 Subfamily Stomiinae |
| | | | | 3 Subfamily Astronesthinae |
| | | | | 4 Subfamily Melanostomiinae |
| | | | | 5 Subfamily Malacosteinae |
| | | | | 6 Subfamily Idiacanthinae |
| | 41.5 Order Ateleopodiformes |
| | | | 152.5 | Family Ateleopodidae |
| | 42 Order Aulopiformes |
| | | | 153 | Family Aulopidae |
| | | | 154 | Family Chlorophthalmidae |
| | | | 154.1 | Family Paraulopidae |
| | | | 154.5 | Family Ipnopidae |
| | | | 154.6 | Family Bathysauroididae |
| | | | 155 | Family Scopelarchidae |
| | | | 156 | Family Notosudidae |
| | | | 156.5 | Family Giganturidae |
| | | | 157 | Family Synodontidae |
| | | | | 1 Subfamily Synodontinae |
| | | | | 2 Subfamily Harpadontinae |
| | | | 157.5 | Family Bathysauridae |
| | | | 159 | Family Paralepididae |
| | | | 159.2 | Family Anotopteridae |
| | | | 161 | Family Evermannellidae |
| | | | 162 | Family Omosudidae |
| | | | 163 | Family Alepisauridae |
| | | | 164 | Family Pseudotrichonotidae |
| | 43 Order Myctophiformes |
| | | | 165 | Family Neoscopelidae |
| | | | 166 | Family Myctophidae |
| | 43.5 Order Lampriformes |
| | | | 218 | Family Lampridae |
| | | | 219 | Family Veliferidae |
| | | | 220 | Family Lophotidae |
| | | | 221 | Family Radiicephalidae |
| | | | 222 | Family Trachipteridae |
| | | | 223 | Family Regalecidae |
| | | | 224 | Family Stylephoridae |
| | 43.7 Order Polymixiiformes |
| | | | 236 | Family Polymixiidae |
| | 45 Order Percopsiformes |
| | | | 167 | Family Percopsidae |
| | | | 168 | Family Aphredoderidae |
| | | | 169 | Family Amblyopsidae |
| | 46 Order Gadiformes |
| | | | 170 | Family Muraenolepididae |
| | | | 170.5 | Family Bregmacerotidae |
| | | | 170.7 | Family Euclichthyidae |
| | | | 170.8 | Family Macrouridae |
| | | | | 1 Subfamily Bathygadinae |
| | | | | 2 Subfamily Macrouroidinae |
| | | | | 3 Subfamily Trachyrincinae |
| | | | | 4 Subfamily Macrourinae |
| | | | 171 | Family Moridae |
| | | | 172 | Family Melanonidae |
| | | | 174 | Family Gadidae |
| | | | 174.2 | Family Lotidae |
| | | | 174.3 | Family Phycidae |
| | | | 175 | Family Merlucciidae |
| | | | | 3 Subfamily Merlucciinae |
| | | | | 4 Subfamily Steindachneriinae |
| | 47 Order Ophidiiformes |
| | | | 177 | Family Ophidiidae |
| | | | | 1 Subfamily Brotulinae |
| | | | | 2 Subfamily Brotulotaeniinae |
| | | | | 3 Subfamily Ophidiinae |
| | | | | 4 Subfamily Neobythitinae |
| | | | 178 | Family Carapidae |
| | | | | 1 Subfamily Carapinae |
| | | | | 2 Subfamily Pyramodontinae |
| | | | | 3 Subfamily Tetragondacninae |
| | | | 179 | Family Bythitidae |
| | | | | 1 Subfamily Bythitinae |
| | | | | 2 Subfamily Brosmophycinae |
| | | | 180 | Family Aphyonidae |
| | | | 180.1 | Family Parabrotulidae |
| | 48 Order Batrachoidiformes |
| | | | 181 | Family Batrachoididae |
| | | | | 1 Subfamily Porichthyinae |
| | | | | 2 Subfamily Thalassophryninae |
| | | | | 3 Subfamily Batrachoidinae |
| | | | | 4 Subfamily Halophryninae |
| | 49 Order Lophiiformes |
| | | | 182 | Family Lophiidae |
| | | | 183 | Family Antennariidae |
| | | | 183.2 | Family Tetrabrachiidae |
| | | | 183.3 | Family Lophichthyidae |
| | | | 184 | Family Brachionichthyidae |
| | | | 185 | Family Chaunacidae |
| | | | 186 | Family Ogcocephalidae |
| | | | 187 | Family Caulophrynidae |
| | | | 187.2 | Family Neoceratiidae |
| | | | 187.3 | Family Melanocetidae |
| | | | 187.4 | Family Himantolophidae |
| | | | 187.5 | Family Diceratiidae |
| | | | 192 | Family Oneirodidae |
| | | | 193 | Family Thaumatichthyidae |
| | | | 194 | Family Centrophrynidae |
| | | | 194.1 | Family Ceratiidae |
| | | | 194.2 | Family Gigantactinidae |
| | | | 194.3 | Family Linophrynidae |
| | 50 Order Gobiesociformes |
| | | | 198 | Family Gobiesocidae |
| | | | | 1 Subfamily Gobiesocinae |
| | | | | 2 Subfamily Cheilobranchinae |
| | 51.5 Order Atheriniformes |
| | | | 213 | Family Atherinidae |
| | | | | 3 Subfamily Atherinomorinae |
| | | | | 4 Subfamily Craterocephalinae |
| | | | | 5 Subfamily Atherininae |
| | | | | 6 Subfamily Bleheratherininae |
| | | | 213.1 | Family Bedotiidae |
| | | | 213.2 | Family Melanotaeniidae |
| | | | 213.3 | Family Pseudomugilidae |
| | | | 213.5 | Family Atherinopsidae |
| | | | | 1 Subfamily Atherinopsinae |
| | | | | 2 Subfamily Menidiinae |
| | | | 213.6 | Family Notocheiridae |
| | | | 213.7 | Family Isonidae |
| | | | 214 | Family Telmatherinidae |
| | | | 215 | Family Dentatherinidae |
| | | | 216 | Family Phallostethidae |
| | 52 Order Cyprinodontiformes |
| | | | 207 | Family Aplocheilidae |
| | | | 207.1 | Family Nothobranchiidae |
| | | | 208 | Family Rivulidae |
| | | | 208.1 | Family Profundulidae |
| | | | 208.2 | Family Fundulidae |
| | | | 208.3 | Family Valenciidae |
| | | | 209 | Family Goodeidae |
| | | | | 1 Subfamily Empetrichthyinae |
| | | | | 2 Subfamily Goodeinae |
| | | | 210 | Family Poeciliidae |
| | | | | 1 Subfamily Poeciliinae |
| | | | | 2 Subfamily Procatopodinae |
| | | | | 3 Subfamily Aplocheilichthyinae |
| | | | 210.5 | Family Cyprinodontidae |
| | | | | 1 Subfamily Cubanichthyinae |
| | | | | 2 Subfamily Cyprinodontinae |
| | | | 211 | Family Anablepidae |
| | | | | 1 Subfamily Anablepinae |
| | | | | 3 Subfamily Oxyzygonectinae |
| | 52.5 Order Beloniformes |
| | | | 201 | Family Scomberesocidae |
| | | | 202 | Family Belonidae |
| | | | 203 | Family Hemiramphidae |
| | | | 203.2 | Family Zenarchopteridae |
| | | | 204 | Family Exocoetidae |
| | | | 205 | Family Adrianichthyidae |
| | | | | 1 Subfamily Oryziinae |
| | | | | 2 Subfamily Adrianichthyinae |
| | 53.5 Order Stephanoberyciformes |
| | | | 237 | Family Stephanoberycidae |
| | | | 237.1 | Family Hispidoberycidae |
| | | | 238 | Family Melamphaidae |
| | | | 239 | Family Gibberichthyidae |
| | 54 Order Beryciformes |
| | | | 229 | Family Monocentridae |
| | | | 230 | Family Trachichthyidae |
| | | | 231 | Family Anomalopidae |
| | | | 232 | Family Diretmidae |
| | | | 233 | Family Anoplogastridae |
| | | | 234 | Family Berycidae |
| | | | 235 | Family Holocentridae |
| | | | | 1 Subfamily Holocentrinae |
| | | | | 2 Subfamily Myripristinae |
| | 54.5 Order Cetomimiformes |
| | | | 240 | Family Rondeletiidae |
| | | | 241 | Family Barbourisiidae |
| | | | 242 | Family Cetomimidae |
| | 55 Order Zeiformes |
| | | | 243.1 | Family Cyttidae |
| | | | 243.2 | Family Oreosomatidae |
| | | | | 1 Subfamily Pseudocyttinae |
| | | | | 2 Subfamily Oreosomatinae |
| | | | 243.3 | Family Parazenidae |
| | | | | 1 Subfamily Parazeninae |
| | | | | 2 Subfamily Cyttopsinae |
| | | | 243.4 | Family Zeniontidae |
| | | | 243.5 | Family Grammicolepididae |
| | | | | 1 Subfamily Macrurocyttinae |
| | | | | 2 Subfamily Grammicolepidinae |
| | | | 245 | Family Zeidae |
| | 55.5 Order Incertae sedis |
| | | | 248.5 | Family Elassomatidae |
| | 56 Order Gasterosteiformes |
| | | | 249 | Family Hypoptychidae |
| | | | 251 | Family Gasterosteidae |
| | | | 251.1 | Family Aulorhynchidae |
| | | | 252 | Family Indostomidae |
| | | | 253 | Family Pegasidae |
| | 59 Order Syngnathiformes |
| | | | 254 | Family Aulostomidae |
| | | | 255 | Family Fistulariidae |
| | | | 256 | Family Centriscidae |
| | | | | 1 Subfamily Macroramphosinae |
| | | | | 2 Subfamily Centriscinae |
| | | | 258 | Family Solenostomidae |
| | | | 259 | Family Syngnathidae |
| | | | | 1 Subfamily Syngnathinae |
| | | | | 2 Subfamily Hippocampinae |
| | 61 Order Synbranchiformes |
| | | | 261 | Family Synbranchidae |
| | | | 430 | Family Mastacembelidae |
| | | | 431 | Family Chaudhuriidae |
| | 62 Order Scorpaeniformes |
| | | 1 Suborder Scorpaenoidei |
| | | | 262.1 | Family Sebastidae |
| | | | | 1 Subfamily Sebastinae |
| | | | | 2 Subfamily Sebastolobinae |
| | | | 262.2 | Family Setarchidae |
| | | | 262.3 | Family Neosebastidae |
| | | | 262.4 | Family Scorpaenidae |
| | | | | 2 Subfamily Scorpaeninae |
| | | | | 3 Subfamily Caracanthinae |
| | | | | 5 Subfamily Pteroinae |
| | | | 262.5 | Family Apistidae |
| | | | 262.6 | Family Tetrarogidae |
| | | | 262.7 | Family Synanceiidae |
| | | | | 10 Subfamily Minoinae |
| | | | | 11 Subfamily Choridactylinae |
| | | | | 12 Subfamily Synanceiinae |
| | | | 262.8 | Family Eschmeyeridae |
| | | | 263 | Family Perryenidae |
| | | | 265 | Family Aploactinidae |
| | | | 266 | Family Pataecidae |
| | | | 266.1 | Family Gnathanacanthidae |
| | | | 267 | Family Congiopodidae |
| | | 2 Suborder Dactylopteroidei |
| | | | 260 | Family Dactylopteridae |
| | | 3 Suborder Platycephaloidei |
| | | | 267.5 | Family Plectrogeniidae |
| | | | 267.6 | Family Parabembridae |
| | | | 267.7 | Family Bembridae |
| | | | 268 | Family Triglidae |
| | | | 268.1 | Family Peristediidae |
| | | | 269.3 | Family Hoplichthyidae |
| | | | 269.5 | Family Platycephalidae |
| | | 4 Suborder Anoplopomatoidei |
| | | | 271 | Family Anoplopomatidae |
| | | 5 Suborder Hexagrammoidei |
| | | | 272 | Family Hexagrammidae |
| | | | | 1 Subfamily Hexagramminae |
| | | | | 2 Subfamily Pleurogramminae |
| | | | | 3 Subfamily Ophiodontinae |
| | | | | 4 Subfamily Oxylebiinae |
| | | | | 5 Subfamily Zaniolepidinae |
| | | 5.7 Suborder Normanichthyoidei |
| | | | 274 | Family Normanichthyidae |
| | | 6 Suborder Cottoidei |
| | | | 274.5 | Family Rhamphocottidae |
| | | | 275 | Family Ereuniidae |
| | | | 275.5 | Family Bathylutichthyidae |
| | | | 276 | Family Cottidae |
| | | | 277 | Family Cottocomephoridae |
| | | | 277.3 | Family Comephoridae |
| | | | 278.5 | Family Abyssocottidae |
| | | | 278.7 | Family Hemitripteridae |
| | | | 279 | Family Psychrolutidae |
| | | | 280 | Family Agonidae |
| | | | | 1 Subfamily Agoninae |
| | | | | 2 Subfamily Anoplagoninae |
| | | | | 3 Subfamily Bathyagoninae |
| | | | | 4 Subfamily Brachyopsinae |
| | | | | 5 Subfamily Hypsagoninae |
| | | | | 6 Subfamily Bothragoninae |
| | | | 281 | Family Cyclopteridae |
| | | | 281.1 | Family Liparidae |
| | 63 Order Perciformes |
| | | 1 Suborder Percoidei |
| | | | 282 | Family Centropomidae |
| | | | 282.5 | Family Ambassidae |
| | | | 282.6 | Family Percichthyidae |
| | | | 282.7 | Family Perciliidae |
| | | | 282.8 | Family Howellidae |
| | | | 282.9 | Family Lateolabracidae |
| | | | 283 | Family Latidae |
| | | | 283.1 | Family Acropomatidae |
| | | | 283.2 | Family Moronidae |
| | | | 283.4 | Family Polyprionidae |
| | | | 283.5 | Family Dinopercidae |
| | | | 284 | Family Serranidae |
| | | | | 1 Subfamily Serraninae |
| | | | | 2 Subfamily Anthiinae |
| | | | | 3 Subfamily Epinephelinae |
| | | | | 4 Subfamily Liopropomatinae |
| | | | | 7 Subfamily Grammistinae |
| | | | 284.4 | Family Ostracoberycidae |
| | | | 284.5 | Family Symphysanodontidae |
| | | | 284.6 | Family Centrogenyidae |
| | | | 286 | Family Pseudochromidae |
| | | | | 1 Subfamily Pseudochrominae |
| | | | | 2 Subfamily Pseudoplesiopinae |
| | | | | 3 Subfamily Anisochrominae |
| | | | | 4 Subfamily Congrogadinae |
| | | | | 5 Subfamily Assiculinae |
| | | | | 6 Subfamily Assiculoidinae |
| | | | 287 | Family Grammatidae |
| | | | 287.1 | Family Callanthiidae |
| | | | 288 | Family Plesiopidae |
| | | | | 1 Subfamily Plesiopinae |
| | | | | 2 Subfamily Acanthoclininae |
| | | | 289.2 | Family Opistognathidae |
| | | | 291 | Family Terapontidae |
| | | | 292 | Family Banjosidae |
| | | | 293 | Family Kuhliidae |
| | | | 294 | Family Centrarchidae |
| | | | 295 | Family Percidae |
| | | | | 1 Subfamily Percinae |
| | | | | 2 Subfamily Luciopercinae |
| | | | | 3 Subfamily Etheostomatinae |
| | | | 296 | Family Priacanthidae |
| | | | 297 | Family Apogonidae |
| | | | | 1 Subfamily Apogoninae |
| | | | | 2 Subfamily Pseudamiinae |
| | | | 297.1 | Family Epigonidae |
| | | | 298 | Family Dinolestidae |
| | | | 299 | Family Sillaginidae |
| | | | 300 | Family Malacanthidae |
| | | | | 1 Subfamily Malacanthinae |
| | | | | 2 Subfamily Latilinae |
| | | | 302 | Family Lactariidae |
| | | | 302.1 | Family Scombropidae |
| | | | 303 | Family Pomatomidae |
| | | | 304 | Family Rachycentridae |
| | | | 305 | Family Echeneidae |
| | | | 306 | Family Carangidae |
| | | | 307 | Family Nematistiidae |
| | | | 308 | Family Coryphaenidae |
| | | | 310 | Family Menidae |
| | | | 311 | Family Leiognathidae |
| | | | 312 | Family Bramidae |
| | | | 313 | Family Caristiidae |
| | | | 314 | Family Arripidae |
| | | | 315 | Family Emmelichthyidae |
| | | | 316 | Family Lutjanidae |
| | | | 317 | Family Caesionidae |
| | | | 318 | Family Lobotidae |
| | | | 318.1 | Family Datnioididae |
| | | | 318.5 | Family Hapalogenyidae |
| | | | 319 | Family Gerreidae |
| | | | 320 | Family Haemulidae |
| | | | | 1 Subfamily Haemulinae |
| | | | | 2 Subfamily Plectorhinchinae |
| | | | 322 | Family Sparidae |
| | | | 323 | Family Centracanthidae |
| | | | 324 | Family Lethrinidae |
| | | | 325 | Family Nemipteridae |
| | | | 326 | Family Sciaenidae |
| | | | 326.5 | Family Polynemidae |
| | | | 327 | Family Mullidae |
| | | | 329 | Family Pempheridae |
| | | | 329.1 | Family Glaucosomatidae |
| | | | 330 | Family Leptobramidae |
| | | | 331 | Family Bathyclupeidae |
| | | | 332 | Family Toxotidae |
| | | | 333 | Family Dichistiidae |
| | | | 334 | Family Kyphosidae |
| | | | | 1 Subfamily Girellinae |
| | | | | 2 Subfamily Kyphosinae |
| | | | | 3 Subfamily Scorpidinae |
| | | | | 4 Subfamily Microcanthinae |
| | | | 334.5 | Family Parascorpididae |
| | | | 335 | Family Drepaneidae |
| | | | 335.5 | Family Monodactylidae |
| | | | 338 | Family Chaetodontidae |
| | | | 339 | Family Pomacanthidae |
| | | | 340 | Family Enoplosidae |
| | | | 341 | Family Pentacerotidae |
| | | | | 1 Subfamily Histiopterinae |
| | | | | 2 Subfamily Pentacerotinae |
| | | | 342 | Family Polycentridae |
| | | | 342.1 | Family Nandidae |
| | | | 342.2 | Family Badidae |
| | | | 342.3 | Family Pristolepididae |
| | | | 343 | Family Oplegnathidae |
| | | | 348 | Family Cirrhitidae |
| | | | 349 | Family Chironemidae |
| | | | 350 | Family Aplodactylidae |
| | | | 351 | Family Cheilodactylidae |
| | | | 352 | Family Latridae |
| | | | 354 | Family Cepolidae |
| | | 2 Suborder Mugiloidei |
| | | | 355 | Family Mugilidae |
| | | 5 Suborder Labroidei |
| | | | 344 | Family Cichlidae |
| | | | | 1 Subfamily Etroplinae |
| | | | | 2 Subfamily Ptychochrominae |
| | | | | 3 Subfamily Pseudocrenilabrinae |
| | | | | 4 Subfamily Cichlinae |
| | | | 345 | Family Embiotocidae |
| | | | 346 | Family Pomacentridae |
| | | | 358 | Family Labridae |
| | | | 359 | Family Odacidae |
| | | | 360 | Family Scaridae |
| | | | | 1 Subfamily Scarinae |
| | | | | 2 Subfamily Sparisomatinae |
| | | 6 Suborder Zoarcoidei |
| | | | 361 | Family Bathymasteridae |
| | | | 362 | Family Zoarcidae |
| | | | | 1 Subfamily Gymnelinae |
| | | | | 2 Subfamily Lycodinae |
| | | | | 3 Subfamily Lycozoarcinae |
| | | | | 4 Subfamily Zoarcinae |
| | | | | 6 Subfamily Neozoarcinae |
| | | | 363 | Family Stichaeidae |
| | | | | 1 Subfamily Stichaeinae |
| | | | | 2 Subfamily Opisthocentrinae |
| | | | | 3 Subfamily Lumpeninae |
| | | | | 4 Subfamily Chirolophinae |
| | | | | 5 Subfamily Xiphisterinae |
| | | | | 6 Subfamily Azygopterinae |
| | | | 364 | Family Cryptacanthodidae |
| | | | 365 | Family Pholidae |
| | | | 366 | Family Anarhichadidae |
| | | | 367 | Family Ptilichthyidae |
| | | | 368 | Family Zaproridae |
| | | | 369 | Family Scytalinidae |
| | | 7 Suborder Notothenioidei |
| | | | 370 | Family Bovichtidae |
| | | | 370.1 | Family Pseudaphritidae |
| | | | 370.2 | Family Eleginopsidae |
| | | | 371 | Family Nototheniidae |
| | | | | 1 Subfamily Pleurogrammatinae |
| | | | | 2 Subfamily Nototheniinae |
| | | | | 3 Subfamily Trematominae |
| | | | 372 | Family Harpagiferidae |
| | | | 372.5 | Family Artedidraconidae |
| | | | 373 | Family Bathydraconidae |
| | | | | 1 Subfamily Bathydraconinae |
| | | | | 2 Subfamily Gymnodraconinae |
| | | | 374 | Family Channichthyidae |
| | | 8 Suborder Trachinoidei |
| | | | 377 | Family Chiasmodontidae |
| | | | 378 | Family Champsodontidae |
| | | | 381 | Family Trichodontidae |
| | | | 381.5 | Family Ammodytidae |
| | | | 382 | Family Trachinidae |
| | | | 383 | Family Uranoscopidae |
| | | | 384 | Family Trichonotidae |
| | | | 385 | Family Creediidae |
| | | | 386 | Family Leptoscopidae |
| | | | 387 | Family Percophidae |
| | | | | 1 Subfamily Percophinae |
| | | | | 2 Subfamily Bembropinae |
| | | | | 3 Subfamily Hemerocoetinae |
| | | | 388 | Family Pinguipedidae |
| | | | 388.2 | Family Cheimarrichthyidae |
| | | 8.5 Suborder Pholidichthyoidei |
| | | | 380 | Family Pholidichthyidae |
| | | 9 Suborder Blennioidei |
| | | | 390.1 | Family Tripterygiidae |
| | | | | 2 Subfamily Notoclininae |
| | | | | 5 Subfamily Tripterygiinae |
| | | | 390.2 | Family Labrisomidae |
| | | | 390.3 | Family Clinidae |
| | | | 390.4 | Family Chaenopsidae |
| | | | 391 | Family Dactyloscopidae |
| | | | 395 | Family Blenniidae |
| | | | | 2 Subfamily Blenniinae |
| | | | | 5 Subfamily Salariinae |
| | | 10 Suborder Icosteoidei |
| | | | 396 | Family Icosteidae |
| | | 13 Suborder Callionymoidei |
| | | | 399 | Family Callionymidae |
| | | | 400 | Family Draconettidae |
| | | 14 Suborder Gobioidei |
| | | | 401 | Family Rhyacichthyidae |
| | | | 401.1 | Family Odontobutidae |
| | | | 402 | Family Eleotridae |
| | | | | 1 Subfamily Butinae |
| | | | | 2 Subfamily Eleotrinae |
| | | | | 6 Subfamily Milyeringinae |
| | | | 402.5 | Family Thalasseleotrididae |
| | | | 403 | Family Gobiidae |
| | | | | 1 Subfamily Sicydiinae |
| | | | | 2 Subfamily Gobionellinae |
| | | | | 3 Subfamily Oxudercinae |
| | | | | 4 Subfamily Amblyopinae |
| | | | | 5 Subfamily Gobiinae |
| | | | 406 | Family Kraemeriidae |
| | | | 407 | Family Microdesmidae |
| | | | | 1 Subfamily Microdesminae |
| | | | | 2 Subfamily Ptereleotrinae |
| | | | 407.5 | Family Xenisthmidae |
| | | | 407.6 | Family Schindleriidae |
| | | 15 Suborder Kurtoidei |
| | | | 296.5 | Family Kurtidae |
| | | 16 Suborder Acanthuroidei |
| | | | 335.2 | Family Ephippidae |
| | | | 336 | Family Scatophagidae |
| | | | 408 | Family Siganidae |
| | | | 408.1 | Family Luvaridae |
| | | | 408.2 | Family Zanclidae |
| | | | 409 | Family Acanthuridae |
| | | 16.4 Suborder Scombrolabracoidei |
| | | | 411 | Family Scombrolabracidae |
| | | 16.5 Suborder Sphyraenoidei |
| | | | 356 | Family Sphyraenidae |
| | | 17 Suborder Scombroidei |
| | | | 412 | Family Gempylidae |
| | | | 413 | Family Trichiuridae |
| | | | | 1 Subfamily Aphanopodinae |
| | | | | 2 Subfamily Lepidopodinae |
| | | | | 3 Subfamily Trichiurinae |
| | | | 417.5 | Family Scombridae |
| | | | | 1 Subfamily Gasterochismatinae |
| | | | | 2 Subfamily Scombrinae |
| | | 17.5 Suborder Xiphioidei |
| | | | 415 | Family Xiphiidae |
| | | | 417 | Family Istiophoridae |
| | | 18 Suborder Stromateoidei |
| | | | 418 | Family Amarsipidae |
| | | | 419 | Family Centrolophidae |
| | | | 420 | Family Nomeidae |
| | | | 421 | Family Ariommatidae |
| | | | 422 | Family Tetragonuridae |
| | | | 423 | Family Stromateidae |
| | | 19 Suborder Anabantoidei |
| | | | 424 | Family Anabantidae |
| | | | 425 | Family Osphronemidae |
| | | | | 1 Subfamily Macropodusinae |
| | | | | 2 Subfamily Luciocephalinae |
| | | | | 3 Subfamily Osphroneminae |
| | | | | 4 Subfamily Belontiinae |
| | | | 426 | Family Helostomatidae |
| | | 21 Suborder Channoidei |
| | | | 429 | Family Channidae |
| | | 22 Suborder Caproidei |
| | | | 248 | Family Caproidae |
| | 64 Order Pleuronectiformes |
| | | | 432 | Family Psettodidae |
| | | | 433 | Family Citharidae |
| | | | 434.1 | Family Scophthalmidae |
| | | | 434.2 | Family Paralichthyidae |
| | | | 434.3 | Family Bothidae |
| | | | 434.5 | Family Achiropsettidae |
| | | | 435 | Family Pleuronectidae |
| | | | | 1 Subfamily Poecilopsettinae |
| | | | | 2 Subfamily Rhombosoleinae |
| | | | | 4 Subfamily Pleuronectinae |
| | | | | 5 Subfamily Paralichthodinae |
| | | | 435.1 | Family Samaridae |
| | | | 436 | Family Achiridae |
| | | | 437 | Family Soleidae |
| | | | 437.5 | Family Cynoglossidae |
| | | | | 1 Subfamily Symphurinae |
| | | | | 2 Subfamily Cynoglossinae |
| | 65 Order Tetraodontiformes |
| | | | 438 | Family Triacanthodidae |
| | | | 439 | Family Triacanthidae |
| | | | 440 | Family Balistidae |
| | | | 440.5 | Family Monacanthidae |
| | | | 440.7 | Family Aracanidae |
| | | | 441 | Family Ostraciidae |
| | | | 442 | Family Triodontidae |
| | | | 443 | Family Tetraodontidae |
| | | | 444 | Family Diodontidae |
| | | | 445 | Family Molidae |
| 9 Class Coelacanthi |
| | 1 Order Coelacanthiformes |
| | | | 31 | Family Latimeriidae |
| 10 Class Dipneusti |
| | 4 Order Ceratodontiformes |
| | | | 28 | Family Neoceratodontidae |
| | 5 Order Lepidosireniformes |
| | | | 29 | Family Lepidosirenidae |
| | | | 29.1 | Family Protopteridae |
