On this page I have the complete taxonomy tree for fish from class to family. I am using the most
up to date information to compile this list. The old taxonomy tree only had three classes; Agnatha,
Chondrichthys, and Ostioichthys. This is the newer tree. There are six classes of Ichthys.
The following two classes used to be grouped in
the old class Agnatha.
Myxini
These are the hagfishes. This class has only one order.
Cephalaspidomorphi
These are the lampreys. Like the hagfishes, there is only one order.
The following two classes used to be grouped in
the old class Chondrichthys.
Holocephali
These are the chimaeras and ratfishes.
This class has only one order.
Elasmobranchii
These are the sharks, rays, and sawfishes. There are twelve orders in this class.
The following two classes used to be grouped in
the old class Ostioichthys.
Sarcopterygii
These are the lobe-finned fish.
There are three orders in this class.
Actinopterygii
These are the ray-finned fish.
There are forty orders in this class.
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- Myxini (hagfishes)
- Myxiniformes (hagfishes)
- Myxinidae (Hagfishes)
- Cephalaspidomorphi (lampreys)
- Petromyzontiformes (lampreys)
- Petromyzontidae (Lampreys)
- Holocephali (chimaeras)
- Chimaeriformes (chimaeras)
- Callorhynchidae (Plownose Chimaeras)
- Chimaeridae (Ratfishes)
- Rhinochimaeridae (Longnose Chimaeras)
- Elasmobranchii (sharks and rays)
- Heterodontiformes (bullhead and horn sharks)
- Heterodontidae (Bullhead, Horn, or Port Jackson Sharks)
- Orectolobiformes (carpet sharks)
- Brachyaeluridae (Blind Sharks)
- Ginglymostomatidae (Nurse Sharks)
- Hemiscylliidae (Bamboo Sharks)
- Orectolobidae (Carpet Sharks)
- Parascylliidae (Collared Carpet Sharks)
- Rhincodontidae (Whale Sharks)
- Stegostomatiidae (Zebra Sharks)
- Carchariniformes (ground sharks)
- Carcharhinidae (Requiem Sharks)
- Hemigaleidae (Weasel Sharks)
- Leptochariidae (Barbeled Houndsharks)
- Proscylliidae (Finback Catsharks)
- Pseudotriakidae (False Catsharks)
- Scyliorhinidae (Cat Sharks)
- Sphyrnidae (Hammerhead, Bonnerhead, Scoophead Sharks)
- Triakidae (Houndsharks)
- Lamniformes (mackerel sharks)
- Alopiidae (Thresher Sharks)
- Cetorhinidae (Basking Sharks)
- Lamnidae (Mackeral Sharks)
- Megachasmidae (Megamouth Sharks)
- Odontaspididae (Sand Tigers)
- Hexanchiformes (frill and cow sharks)
- Chlamydoselachidae (Frilled Sharks)
- Hexanchidae (Cow Sharks)
- Squaliformes (bramble, sleeper and dogfish sharks)
- Echinorhinidae (Bramble Sharks)
- Squalidae (Dogfish Sharks)
- Squatiniformes (angel sharks)
- Squatinidae (Angel Sharks)
- Pristiophoriformes (saw sharks)
- Pristiophoridae (Saw Sharks)
- Pristiformes (sawfishes)
- Torpediniformes (electric rays)
- Narkidae
- Torpedinidae (Electric Rays)
- Rajiformes (skates and rays)
- Anacanthobatidae (Smooth Skates)
- Platyrhinidae (Thornbacks)
- Rajidae (Skates)
- Rhinobatidae (Guitarfishes)
- Myliobatiformes (eagle rays, stingrays and mantas)
- Dasyatidae (Stingrays)
- Gymnuridae (Butterfly Rays)
- Hexatrygonidae
- Mobulidae (Manta and Devil Rays)
- Myliobatidae (Eagle Rays)
- Plesiobatidae (Deepwater Stingrays)
- Potamotrygonidae (River Stingrays)
- Urolophidae (Round Rays)
- Sarcopterygii (lobe-finned fishes)
- Coelacanthiformes (coelacanths)
- Ceratodontiformes (Australian lungfishes)
- Ceratodontidae (Australian Lungfish)
- Lepidosireniformes (South American and African lungfishes)
- Lepidosirenidae (Aestivating Lungfishes)
- Actinopterygii (ray-finned fishes)
- Polypteriformes (bichirs)
- Acipenseriformes (sturgeons and paddlefishes)
- Acipenseridae (Sturgeons)
- Polyodontidae (Paddlefishes)
- Lepisosteiformes (gars)
- Amiiformes (bowfins)
- Osteoglossiformes (bony tongues)
- Gymnarchidae
- Hiodontidae (Mooneyes)
- Mormyridae (Elephantfishes)
- Notopteridae (Knifefishes)
- Osteoglossidae (Bonytongues)
- Pantodontidae (Butterflyfish)
- Elopiformes (tarpons and tenpounders)
- Elopidae (Tenpounders)
- Megalopidae (Tarpons)
- Albuliformes (bonefishes)
- Notacanthiformes (halosaurs and deep-sea spiny eels)
- Halosauridae (Halosaurs)
- Lipogenyidae
- Notacanthidae (Deep-sea Spiny Eels)
- Anguilliformes (eels and morays)
- Anguillidae (Freshwater Eels)
- Chlopsidae (False Morays)
- Colocongridae
- Congridae (Conger Eels)
- Derichthyidae (Longneck Eels)
- Heterenchelyidae
- Moringuidae (Worm Eels)
- Muraenesocidae (Pike Congers)
- Muraenidae (Moray Eels)
- Myrocongridae
- Nemichthyidae (Snipe Eels)
- Nettastomatidae (Duckbill Eels)
- Ophichthidae (Snake Eels)
- Serrivomeridae (Sawtooth Eels)
- Synaphobranchidae (Cutthroat Eels)
- Saccopharyngiformes (swallowers and gulpers)
- Cyematidae (Bobtail Snipe Eels)
- Eurypharyngidae (Gulpers)
- Monognathidae
- Saccopharyngidae (Swallowers)
- Clupeiformes (herrings)
- Chirocentridae (Wolf Herrings)
- Clupeidae (Herrings)
- Denticipitidae (Denticle Herrings)
- Engraulidae (Anchovies)
- Gonorynchiformes (milkfish)
- Chanidae (Milkfish)
- Gonorynchidae (Beaked Salmons)
- Kneriidae (Shellears)
- Phractolaemidae (Hingemouths)
- Cypriniformes (carps)
- Balitoridae (Hillstream Loaches)
- Catostomidae (Suckers)
- Cobitidae (Loaches)
- Cyprinidae (Minnows and Carps)
- Gyrinocheilidae (Algae Eaters)
- Psilorhynchidae
- Characiformes (characins)
- Alestiidae (African Tetras)
- Characidae (Characins)
- Citharinidae
- Ctenoluciidae (Pike Characins)
- Curimatidae
- Cynodontidae
- Erythrinidae (Trahiras)
- Gasteropelecidae (Freshwater Hatchetfishes)
- Hemiodontidae
- Hepsetidae
- Lebiasinidae
- Siluriformes (catfish)
- Ageneiosidae (Bottlenose or Barbless Catfishes)
- Akysidae (Stream Catfishes)
- Amblycipitidae (Torrent Catfishes)
- Amphiliidae (Loach Catfishes)
- Ariidae (Sea Catfishes)
- Aspredinidae (Banjo Catfishes)
- Astroblepidae (Climbing Catfishes)
- Auchenipteridae (Driftwood Catfishes)
- Bagridae (Bagrid Catfishes)
- Callichthyidae (Callichthyid Armored Catfishes)
- Cetopsidae (Whalelike Catfishes)
- Chacidae (Squarehead Catfishes)
- Clariidae (Airbreathing Catfishes)
- Cranoglanididae (Armorhead Catfishes)
- Diplomystidae (Diplomystid Catfishes)
- Doradidae (Thorny Catfishes)
- Helogeneidae (Marbled Catfishes)
- Heteropneustidae (Airsac Catfishes)
- Hypophthalmidae (Loweye Catfishes)
- Ictaluridae (North American Freshwater Catfishes)
- Loricariidae (Armored Catfishes)
- Malapteruridae (Electric Catfishes)
- Mochokidae (Upside Down Catfishes)
- Olyridae (Longtail Catfishes)
- Pangasiidae (Shark Catfishes)
- Parakysidae (Parakysid Catfishes)
- Pimelodidae (Long Whiskered Catfishes)
- Plotosidae (Eeltail Catfishes)
- Schilbeidae (Schilbid Catfishes)
- Scoloplacidae (Spiny Dwarf Catfishes)
- Siluridae (Sheatfishes)
- Sisoridae (Sisorid Catfishes)
- Trichomycteridae (Pencil or Parasitic Catfishes)
- Gymnotiformes (knifefishes)
- Gymnotidae (Naked Back Knifefishes)
- Salmoniformes (salmons, pikes and smelts)
- Alepocephalidae (Slickheads)
- Argentinidae (Herring Smelts)
- Bathylagidae (Deep Sea Smelts)
- Esocidae (Pikes)
- Galaxiidae (Galaxiids)
- Lepidogalaxiidae (Salamanderfishes)
- Leptochilichthyidae (Leptochilichthyids)
- Microstomatidae
- Opisthoproctidae (Barreleyes or Spookfishes)
- Osmeridae (Smelts)
- Platytroctidae (Tubeshoulders)
- Plecoglossidae (Ayu Fish)
- Retropinnidae (New Zealand Smelts)
- Salangidae (Icefishes or Noodlefishes)
- Salmonidae (Trouts and Salmons)
- Umbridae (Mudminnows)
- Stomiiformes (lightfishes and dragonfishes)
- Astronesthidae (Snaggletooths)
- Chauliodontidae (Viperfishes)
- Gonostomatidae (Bristlemouths or Lightfishes)
- Idiacanthidae (Black Dragonfishes)
- Malacosteidae (Loosejaws)
- Melanostomiidae (Scaleless Black Dragonfishes)
- Phosichthyidae (Lightfishes)
- Sternoptychidae
- Stomiidae (Scaly Dragonfishes)
- Aulopiformes (grinners)
- Alepisauridae (Lancetfishes)
- Anotopteridae (Daggertooth)
- Aulopidae (Aulopus)
- Chlorophthalmidae (Greeneyes)
- Evermannellidae (Sabertooth Fishes)
- Giganturidae (Telescopefishes)
- Notosudidae (Waryfishes)
- Omosudidae
- Paralepididae (Barracudinas)
- Pseudotrichonotidae
- Scopelarchidae (Pearleyes)
- Synodontidae (Lizardfishes)
- Myctophiformes (lanternfishes)
- Myctophidae (Lanternfishes)
- Neoscopelidae
- Lampriformes (velifers, tube-eyes and ribbonfishes)
- Ateleopodidae (Jellynose Fishes)
- Lampridae (Opah)
- Lophotidae (Crestfishes)
- Megalomycteridae (Largenose Fishes)
- Mirapinnidae (Hairyfish, Tapetails, and Ribbonbearers)
- Radiicephalidae
- Regalecidae (Oarfishes)
- Stylephoridae (Tube-eye or Thread-tail)
- Trachipteridae (Ribbonfishes)
- Veliferidae (Velifers)
- Percopsiformes (trout-perches, pirate perches, cavefishes)
- Amblyopsidae (Cavefishes)
- Aphredoderidae (Pirate Perches)
- Percopsidae (Trout Perches)
- Ophidiiformes (cusk eels)
- Aphyonidae
- Bythitidae (Viviparous Brotulas)
- Carapidae (Pearlfishes)
- Ophidiidae (Cusk Eels)
- Gadiformes (cods)
- Bregmacerotidae (Codlets)
- Euclichthyidae (Eucla Cods)
- Gadidae (Cods and Haddocks)
- Lotidae (Hakes and Burbots)
- Macrouridae (Grenadiers or Rattails)
- Melanonidae (Melanonids)
- Merlucciidae (Merluccid Hakes)
- Moridae (Morid Cods)
- Muraenolepididae (Eel Cods)
- Phycidae (Phycid Hakes)
- Batrachoidiformes (toadfishes)
- Batrachoididae (Toadfishes)
- Lophiiformes (anglerfishes)
- Antennariidae (Frogfishes)
- Brachionichthyidae (Warty Anglers)
- Caulophrynidae
- Centrophrynidae (Deep Sea Anglerfish)
- Ceratiidae (Seadevils)
- Chaunacidae (Sea Toads)
- Diceratiidae
- Gigantactinidae
- Himantolophidae (Footballfishes)
- Linophrynidae
- Lophichthyidae (Lophichthyid Frogfishes)
- Lophiidae (Goosefishes)
- Melanocetidae
- Neoceratiidae
- Ogcocephalidae (Batfishes)
- Oneirodidae
- Tetrabrachiidae
- Thaumatichthyidae
- Atheriniformes (silversides)
- Atherinidae (Silversides)
- Phallostethidae
- Beloniformes (needle fishes)
- Adrianichthyidae (Ricefishes)
- Belonidae (Needlefishes)
- Exocoetidae (Flyingfishes)
- Hemiramphidae (Halfbeaks)
- Scomberesocidae (Sauries)
- Cyprinodontiformes (rivulines, killifishes and live bearers)
- Anablepidae (Four-eyed fishes and jenynsiids)
- Aplocheilidae (Rivulines)
- Cyprinodontidae (Killifishes)
- Goodeidae (Goodeids)
- Poeciliidae (Livebearers)
- Beryciformes (sawbellies)
- Anomalopidae (Lanterneye fishes)
- Anoplogastridae (Fangtooth)
- Berycidae (Alfonsinos, berycids)
- Diretmidae (Spinyfins)
- Gibberichthyidae (Gibberfishes)
- Hispidoberycidae
- Holocentridae (Squirrelfishes, soldierfishes)
- Melamphaidae (Bigscale fishes or ridgeheads)
- Monocentridae (Pinecone fishes)
- Polymixiidae (Beardfishes)
- Stephanoberycidae (Pricklefishes)
- Trachichthyidae (Slimeheads)
- Cetomimiformes (whalefishes)
- Barbourisiidae (Velvet whalefishes)
- Cetomimidae (Flabby whalefishes)
- Rondeletiidae (Redmouth whalefishes)
- Zeiformes (dories)
- Caproidae (Boarfishes)
- Grammicolepididae (Grammicolepididae)
- Macrurocyttidae
- Oreosomatidae (Oreos)
- Parazenidae (Parazen)
- Zeidae (Dories)
- Gasterosteiformes (sticklebacks and seamoths)
- Gasterosteidae (Sticklebacks and tubesnouts)
- Hypoptychidae (Sand eel)
- Indostomidae
- Pegasidae (Seamoths)
- Syngnathiformes (pipefishes and seahorses)
- Aulostomidae (Trumpetfishes)
- Centriscidae (Snipefishes and shrimpfishes)
- Fistulariidae (Cornetfishes)
- Solenostomidae (Ghost pipefishes)
- Syngnathidae (Pipefishes and seahorses)
- Synbranchiformes (spiny eels)
- Chaudhuriidae
- Mastacembelidae (Spiny eels)
- Synbranchidae (Swamp-eels)
- Scorpaeniformes (scorpionfishes and flatheads)
- Agonidae (Poachers)
- Anoplopomatidae (Sablefishes)
- Aploactinidae (Velvetfishes)
- Bembridae (Deepwater flatheads)
- Caracanthidae (Orbicular velvetfishes)
- Comephoridae (Baikal oilfishes)
- Congiopodidae (Racehorses or pigfishes)
- Cottidae (Sculpins)
- Cottocomephoridae
- Cyclopteridae (Lumpfishes and snailfishes)
- Dactylopteridae (Flying gurnards)
- Ereuniidae
- Gnathanacanthidae (Red velvetfish)
- Hexagrammidae (Greenlings)
- Hoplichthyidae (Ghost flatheads)
- Normanichthyidae
- Pataecidae (Prowfishes)
- Platycephalidae (Flatheads)
- Psychrolutidae (Fatheads)
- Scorpaenidae (Scorpionfishes or rockfishes)
- Triglidae (Searobins)
- Perciformes (perch-likes)
- Acanthoclinidae (Spiny basslets)
- Acanthuridae (Surgeonfishes)
- Acropomatidae (Lanternbellies, temperate ocean-basses)
- Amarsipidae
- Ambassidae (Glass perchlets)
- Ammodytidae (Sand lances)
- Anabantidae (Climbing gouramies)
- Anarhichadidae (Wolffishes)
- Aplodactylidae (Marblefishes)
- Apogonidae (Cardinalfishes)
- Ariommatidae (Ariommatids)
- Arripidae (Australian salmon)
- Banjosidae
- Bathyclupeidae
- Bathydraconidae (Antarctic dragonfishes)
- Bathymasteridae (Ronquils)
- Belontiidae (Gouramies)
- Blenniidae (Combtooth blennies)
- Bovichtidae (Thornfishes)
- Bramidae (Pomfrets)
- Caesionidae (Fusiliers)
- Callanthiidae (Splendid perches)
- Callionymidae (Dragonets)
- Carangidae (Jacks and pompanos)
- Caristiidae (Manefishes)
- Centracanthidae
- Centrarchidae (Sunfishes)
- Centrogeniidae
- Centrolophidae (Medusafishes)
- Centropomidae (Snooks)
- Cepolidae (Bandfishes)
- Chaenopsidae (Pike-, tube- and flagblennies)
- Chaetodontidae (Butterflyfishes)
- Champsodontidae
- Channichthyidae (Crocodile icefishes)
- Channidae (Snakeheads)
- Cheilodactylidae (Morwongs)
- Chiasmodontidae
- Chironemidae (Kelpfishes)
- Cichlidae (Cichlids)
- Cirrhitidae (Hawkfishes)
- Clinidae (Clinids)
- Coracinidae (Galjoen Fishes)
- Coryphaenidae (Dolphinfishes)
- Creediidae (Sandburrowers)
- Cryptacanthodidae (Wrymouths)
- Dactyloscopidae (Sand stargazers)
- Dinolestidae (Long-finned pike)
- Dinopercidae (Cavebasses)
- Draconettidae
- Drepanidae (Sicklefishes)
- Echeneidae (Remoras)
- Elassomatidae (Pygmy sunfishes)
- Eleotridae (Sleepers)
- Embiotocidae (Surfperches)
- Emmelichthyidae (Rovers)
- Enoplosidae (Oldwife)
- Ephippidae (Spadefishes, batfishes and scats)
- Epigonidae (Deepwater cardinalfishes)
- Gempylidae (Snake mackerels)
- Gerreidae (Mojarras)
- Glaucosomatidae (Pearl perches)
- Gobiidae (Gobies)
- Grammatidae (Basslets)
- Haemulidae (Grunts)
- Harpagiferidae (Plunderfishes)
- Helostomatidae (Kissing gourami)
- Icosteidae (Ragfish)
- Inermiidae (Bonnetmouths)
- Istiophoridae (Billfishes)
- Kraemeriidae (Sandfishes or sand gobies)
- Kuhliidae (Aholeholes)
- Kurtidae (Nurseryfishes)
- Kyphosidae (Sea chubs)
- Labridae (Wrasses)
- Labrisomidae (Labrisomids)
- Lactariidae (False trevallies)
- Latridae (Trumpeters)
- Leiognathidae (Slimys, slipmouths, or ponyfishes)
- Leptobramidae (Beachsalmon)
- Leptoscopidae (Southern sandfishes)
- Lethrinidae (Emperors or scavengers)
- Lobotidae (Tripletails)
- Luciocephalidae (Pikehead)
- Lutjanidae (Snappers)
- Luvaridae (Louvar)
- Malacanthidae (Tilefishes)
- Menidae (Moonfish)
- Microdesmidae (Wormfishes)
- Monodactylidae (Fingerfishes)
- Moronidae (Temperate basses)
- Mugilidae (Mullets)
- Mullidae (Goatfishes)
- Nandidae (Leaf fishes)
- Nematistiidae (Roosterfish)
- Nemipteridae (Threadfin and whiptail breams)
- Nomeidae (Driftfishes)
- Notograptidae
- Nototheniidae (Cod icefishes)
- Odacidae (Cales and weed-whitings)
- Opistognathidae (Jawfishes)
- Oplegnathidae (Knifejaws)
- Osphronemidae (Giant gourami)
- Parascorpididae (Jutjaws)
- Pempheridae (Sweepers)
- Pentacerotidae (Armorheads)
- Percichthyidae (Temperate basses)
- Percidae (Perches)
- Percophidae (Duckbills)
- Pholidae (Gunnels)
- Pholidichthyidae (Convict blenny)
- Pinguipedidae (Sandperches)
- Plesiopidae (Roundheads)
- Polynemidae (Threadfins)
- Polyprionidae (Wreckfishes)
- Pomacanthidae (Angelfishes)
- Pomacentridae (Damselfishes)
- Pomatomidae (Bluefishes)
- Priacanthidae (Bigeyes or catalufas)
- Pseudochromidae (Dottybacks)
- Ptilichthyidae (Quillfish)
- Rachycentridae (Cobias)
- Rhyacichthyidae (Loach gobies)
- Scaridae (Parrotfishes)
- Scatophagidae (Scats)
- Schindleriidae
- Sciaenidae (Drums or croakers)
- Scombridae (Mackerels, tunas, bonitos)
- Scombrolabracidae
- Scombropidae (Gnomefishes)
- Scytalinidae (Graveldiver)
- Serranidae (Sea basses, groupers, basslets)
- Siganidae (Rabbitfishes)
- Sillaginidae (Smelt-whitings)
- Sparidae (Porgies)
- Sphyraenidae (Barracudas)
- Stichaeidae (Pricklebacks)
- Stromateidae (Butterfishes)
- Symphysanodontidae
- Terapontidae (Grunters or tigerperches)
- Tetragonuridae (Squaretails)
- Toxotidae (Archerfishes)
- Trachinidae (Weeverfishes)
- Trichiuridae (Cutlassfishes)
- Trichodontidae (Sandfishes)
- Trichonotidae (Sanddivers)
- Tripterygiidae (Threefin blennies)
- Uranoscopidae (Stargazers)
- Xenisthmidae
- Xenocephalidae (Armored blenny)
- Xiphiidae (Swordfish)
- Zanclidae (Moorish idol)
- Zaproridae (Prowfish)
- Zoarcidae (Eelpouts)
- Gobiesociformes (clingfishes)
- Gobiesocidae (Clingfishes and singleslits)
- Pleuronectiformes (flatfishes)
- Achiridae (American soles)
- Achiropsettidae (Southern flounders)
- Bothidae (Lefteye flounders)
- Citharidae (Citharids)
- Cynoglossidae (Tonguefishes)
- Paralichthyidae (Large-tooth flounders)
- Pleuronectidae (Righteye flounders)
- Psettodidae (Psettodids)
- Scophthalmidae
- Soleidae (Soles)
- Tetraodontiformes (puffers and filefishes)
- Balistidae (Triggerfishes)
- Diodontidae (Porcupinefishes)
- Molidae (Molas)
- Monacanthidae (Filefishes)
- Ostraciidae (Boxfishes)
- Tetraodontidae (Puffers)
- Triacanthidae (Triplespines)
- Triacanthodidae (Spikefishes)
- Triodontidae (Three-toothed puffer)
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