Three-spined hatchetfish  (Polyipnus tridentifer)

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Taxonomy of Fishes

• Osteichthyes - Bony fishes->

  • Coelacanthi - Lobe-finned fishes->
  • Teleostei - Ray-finned fishes->

    • Perciformes - Perches->
    • Cypriniformes - Carps->
    • Esociformes - Pikes->
    • Salmoniformes - Salmons and Trouts->
    • Siluriformes - Catfishes->
    • Scorpaeniformes - Mail-cheeked fishes->
    • Gasterosteiformes - Sticklebacks->
    • Gadiformes - Cods->
    • Anguilliformes - Eels and morays->
    • Clupeiformes - Herrings->
    • Syngnathiformes - Pipefishes and Seahorses->
    • Gobiiformes - Gobies->
    • Mugiliformes - Mullets->
    • Carangiformes - Jacks->
    • Beloniformes - Needlefishes->
    • Labriformes - Wrasses->
    • Scombriformes - Mackerels->
    • Mulliformes - Goatfishes->
    • Pleuronectiformes - Flatfishes->
    • Aulopiformes - Grinners->
    • Blenniiformes - Blennies->
    • Cyprinodontiformes - Toothcarps->
    • Osmeriformes - Smelts->
    • Centrarchiformes - Basses and sunfishes->
    • Cichliformes - Cichlids->
    • Characiformes - Characins->
    • Osteoglossiformes - Bony tongues->
    • Elopiformes - Tarpons and tenpounders->
    • Anabantiformes - Gouramies and snakeheads->
    • Gymnotiformes - South American knifefish->
    • Istiophoriformes - Barracudas->
    • Albuliformes - Bonefishes->
    • Lepidogalaxiiformes - Salamanderfishes->
    • Lophiiformes - Anglerfishes->
    • Spariformes - Breams and porgies->
    • Trachiniformes - Weeverfishes->
    • Moroniformes - Temperate basses->
    • Acanthuriformes - Surgeonfishes->
    • Zeiformes - Dories->
    • Tetraodontiformes - Puffers and filefishes->
    • Holocentriformes - Squirrelfishes->
    • Dactylopteriformes - Flying gurnards->
    • Lampriformes - Lamprids->
    • Galaxiiformes - Southern smelts->
    • Batrachoidiformes - Toadfishes->
    • Hiodontiformes - Mooneyes->
    • Percopsiformes - Trout-perches->
    • Callionymiformes - Dragonets->
    • Atheriniformes - Silversides->
    • Notacanthiformes - Spiny eels->
    • Saccopharyngiformes - Swallowers and Gulpers->
    • Alepocephaliformes - Slickheads and tubeshoulders->
    • Gonorynchiformes - Milkfishes->
    • Argentiniformes - Marine smelts->
    • Stomiiformes - Lightfishes and dragonfishes->

      • Diplophidae - Diplophidae->
      • Gonostomatidae - Bristlemouths->
      • Phosichthyidae - Lightfishes->
      • Sternoptychidae - Marine hatchetfishes->

        • Araiophos - Araiophos->
        • Argyripnus - Argyripnus->
        • Argyropelecus - Argyropelecus->
        • Danaphos - Danaphos->
        • Maurolicus - Maurolicus->
        • Polyipnus - Polyipnus->

          • Aquavit hatchetfish (Polyipnus aquavitus)
          • Polyipnus asper (Polyipnus asper)
          • Polyipnus asteroides (Polyipnus asteroides)
          • Polyipnus bruuni (Polyipnus bruuni)
          • Slope hatchetfish (Polyipnus clarus)
          • Polyipnus danae (Polyipnus danae)
          • Polyipnus elongatus (Polyipnus elongatus)
          • Polyipnus fraseri (Polyipnus fraseri)
          • Polyipnus indicus (Polyipnus indicus)
          • Polyipnus inermis (Polyipnus inermis)
          • Kiwi hatchetfish (Polyipnus kiwiensis)
          • Bigeye hatchetfish (Polyipnus laruei)
          • Polyipnus laternatus (Polyipnus laternatus)
          • Combside hatchetfish (Polyipnus latirastrus)
          • Polyipnus limatulus (Polyipnus limatulus)
          • Polyipnus matsubarai (Polyipnus matsubarai)
          • Polyipnus meteori (Polyipnus meteori)
          • Nutting’s hatchet fish (Polyipnus nuttingi)
          • Polyipnus oluolus (Polyipnus oluolus)
          • Polyipnus omphus (Polyipnus omphus)
          • Polyipnus ovatus (Polyipnus ovatus)
          • Polyipnus parini (Polyipnus parini)
          • Paxton’s hatchetfish (Polyipnus paxtoni)
          • Round hatchetfish (Polyipnus polli)
          • Rugby hatchetfish (Polyipnus ruggeri)
          • Soela hatchetfish (Polyipnus soelae)
          • Polyipnus spinifer (Polyipnus spinifer)
          • Spiny hatchetfish (Polyipnus spinosus)
          • Polyipnus stereope (Polyipnus stereope)
          • Polyipnus surugaensis (Polyipnus surugaensis)
          • Three-spined hatchetfish (Polyipnus tridentifer)
          • Threelight hatchetfish (Polyipnus triphanos)
          • Polyipnus unispinus (Polyipnus unispinus)
        • Sonoda - Sonoda->
        • Sternoptyx - Sternoptyx->
        • Thorophos - Thorophos->
        • Valenciennellus - Valenciennellus->
      • Stomiidae - Barbeled dragonfishes->
    • Ateleopodiformes - Jellynose fishes->
    • Myctophiformes - Lanternfishes->
    • Stylephoriformes - Tube-eyes->
    • Polymixiiformes - Beardfishes->
    • Beryciformes - Sawbellies->
    • Trachichthyiformes - Rughies->
    • Ophidiiformes - Cusk-eels->
    • Kurtiformes - Nurseryfishes & Cardinalfishes->
    • Synbranchiformes - Swamp eels->
    • Gobiesociformes - Clingfishes->
    • Acropomatiformes - Oceanic basses->
  • Cladistii - Bichirs->
  • Dipneusti - Lungfishes->
  • Chondrostei - Sturgeons->
  • Holostei - Gars and Bowfins->
• Chondrichthyes - Cartilaginous fishes->
• Agnatha - Jawless fishes->