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 Cephalaspidomorphi |
| | 5 Order Petromyzontiformes |
| | | | 2 Family Petromyzontidae |
| | | | | 1 Subfamily Petromyzontinae |
| | | | | 2 Subfamily Geotriinae |
| | | | | 3 Subfamily Mordaciinae |
| 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 |
| | | | 13.2 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 |
| | | | | 1 Subfamily Etmopterinae |
| | | | | 2 Subfamily Somniosinae |
| | | | | 3 Subfamily Oxynotinae |
| | | | | 4 Subfamily Dalatiinae |
| | | | 15.1 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 |
| | | | 22 Family Rajidae |
| | | | 22.1 Family Anacanthobatidae |
| | | | 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 Actinopterygii |
| | 7 Order Polypteriformes |
| | | | 32 Family Polypteridae |
| | 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 |
| | | | 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 |
| | | | 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 Xenocyprinae |
| | | | | 9 Subfamily Gobioninae |
| | | | | 10 Subfamily Rasborinae |
| | | | | 11 Subfamily Leuciscinae |
| | | | 77 Family Psilorhynchidae |
| | | | 77.5 Family Cobitidae |
| | | | | 1 Subfamily Botiinae |
| | | | | 2 Subfamily Cobitinae |
| | | | 78 Family Balitoridae |
| | | | | 1 Subfamily Nemacheilinae |
| | | | | 2 Subfamily Balitorinae |
| | | | 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 |
| | | | 90.5 Family Cynodontidae |
| | | | | 1 Subfamily Cynodontinae |
| | | | | 2 Subfamily Roestinae |
| | | | 90.8 Family Serrasalmidae |
| | | | 91 Family Characidae |
| | | | | 1 Subfamily Glandulocaudinae |
| | | | | 6 Subfamily Stethaprioninae |
| | | | | 7 Subfamily Agoniatinae |
| | | | | 8 Subfamily Clupeacharacinae |
| | | | | 9 Subfamily Iguanodectinae |
| | | | | 10 Subfamily Bryconinae |
| | | | | 11 Subfamily Aphyocharacinae |
| | | | | 12 Subfamily Characinae |
| | | | | 13 Subfamily Tetragonopterinae |
| | | | | 14 Subfamily Rhoadsiinae |
| | | | | 15 Subfamily Cheirodontinae |
| | | | | 16 Subfamily Salmininae |
| | | | | 17 Subfamily Bryconops clade |
| | | | | 18 Subfamily Heterocharacinae |
| | | | | 19 Subfamily Jupiaba clade |
| | | | | 20 Subfamily Hemigrammus clade |
| | | | | 21 Subfamily Astyanax clade |
| | | | | 22 Subfamily Bramocharax clade |
| | | | | 23 Subfamily Nematobrycon clade |
| | | | | 24 Subfamily Gymnocharacinae |
| | | | | 25 Subfamily Aphyoditeinae |
| | | | | 26 Subfamily Stevardiinae |
| | | | 91.5 Family Crenuchidae |
| | | | | 1 Subfamily Crenuchinae |
| | | | | 2 Subfamily Characidiinae |
| | 38 Order Siluriformes |
| | | | 92 Family Diplomystidae |
| | | | 92.1 Family Lacantuniidae |
| | | | 93 Family Ictaluridae |
| | | | 94 Family Bagridae |
| | | | 95 Family Cranoglanididae |
| | | | 95.5 Family Austroglanididae |
| | | | 96 Family Siluridae |
| | | | 97 Family Schilbeidae |
| | | | 98 Family Pangasiidae |
| | | | 99 Family Amblycipitidae |
| | | | 100 Family Amphiliidae |
| | | | | 1 Subfamily Amphiliinae |
| | | | | 2 Subfamily Leptoglanidinae |
| | | | | 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 |
| | | | 105 Family Chacidae |
| | | | 106 Family Olyridae |
| | | | 107 Family Malapteruridae |
| | | | 108 Family Ariidae |
| | | | 108.5 Family Anchariidae |
| | | | 109 Family Plotosidae |
| | | | 110 Family Mochokidae |
| | | | 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 |
| | | | 117 Family Hypophthalmidae |
| | | | 118 Family Aspredinidae |
| | | | 118.1 Family Nematogenyidae |
| | | | 119 Family Trichomycteridae |
| | | | 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 |
| | | | 154.2 Family Bathysauropsidae |
| | | | 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 |
| | | | | 4 Subfamily Craterocephalinae |
| | | | 213.1 Family Bedotiidae |
| | | | 213.2 Family Melanotaeniidae |
| | | | 213.3 Family Pseudomugilidae |
| | | | 213.4 Family Atherinidae |
| | | | | 5 Subfamily Atherininae |
| | | | | 6 Subfamily Bleheratherininae |
| | | | 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 |
| | | | | 1 Subfamily Hemiramphinae |
| | | | | 2 Subfamily Zenarchopterinae |
| | | | 204 Family Exocoetidae |
| | | | 205 Family Adrianichthyidae |
| | | | | 1 Subfamily Oryziinae |
| | | | | 2 Subfamily Adrianichthyinae |
| | | | | 3 Subfamily Horaichthyinae |
| | 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 |
| | | | 226 Family Mirapinnidae |
| | | | 228 Family Megalomycteridae |
| | | | 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 Zenionidae |
| | | | 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 |
| | | | 265 Family Aploactinidae |
| | | | 266 Family Pataecidae |
| | | | 266.1 Family Gnathanacanthidae |
| | | | 267 Family Congiopodidae |
| | | | 267.1 Family Zanclorhynchidae |
| | | 2 Suborder Dactylopteroidei |
| | | | 260 Family Dactylopteridae |
| | | 3 Suborder Platycephaloidei |
| | | | 267.5 Family Plectrogenidae |
| | | | 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 |
| | | | 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 Etheostominae |
| | | | 296 Family Priacanthidae |
| | | | 297 Family Apogonidae |
| | | | | 1 Subfamily Apogoninae |
| | | | | 2 Subfamily Pseudaminae |
| | | | 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 |
| | | | 321 Family Inermiidae |
| | | | 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 |
| | | | 342 Family Polycentridae |
| | | | 342.1 Family Nandidae |
| | | | 342.2 Family Badidae |
| | | | 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 |
| | | | 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 |
| | | | 363 Family Stichaeidae |
| | | | | 1 Subfamily Stichaeinae |
| | | | | 2 Subfamily Opisthocentrinae |
| | | | | 3 Subfamily Lumpeninae |
| | | | | 4 Subfamily Chirolophinae |
| | | | | 5 Subfamily Xiphisterinae |
| | | | | 6 Subfamily Neozoarcinae |
| | | | 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 |
| | | | 372 Family Harpagiferidae |
| | | | 372.5 Family Artedidraconidae |
| | | | 373 Family Bathydraconidae |
| | | | 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 |
| | | | 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 Lepidopinae |
| | | | | 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 Sarcopterygii |
| | 1 Order Coelacanthiformes |
| | | | 31 Family Latimeriidae |
| | 4 Order Ceratodontiformes |
| | | | 28 Family Ceratodontidae |
| | 5 Order Lepidosireniformes |
| | | | 29 Family Lepidosirenidae |
| | | | 29.1 Family Protopteridae |
| 10 Class Unplaced |
| | | | 9999 Family Unplaced |
|
