Half-spined seahorse  (Hippocampus semispinosus)

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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->

      • Syngnathidae - Pipefishes and seahorses->

        • Syngnathus - Pipefishes->
        • Hippocampus - Seahorses ->

          • Big-belly seahorse (Hippocampus abdominalis)
          • Longsnout seahorse (Hippocampus reidi)
          • Winged seahorse (Hippocampus alatus)
          • West African seahorse (Hippocampus algiricus)
          • Western spiny seahorse (Hippocampus angustus)
          • Barbour’s seahorse (Hippocampus barbouri)
          • Pygmy seahorse (Hippocampus bargibanti)
          • Réunion seahorse (Hippocampus borboniensis)
          • Shorthead seahorse (Hippocampus breviceps)
          • Giraffe seahorse (Hippocampus camelopardalis)
          • Knysna seahorse (Hippocampus capensis)
          • Beibu Bay seahorse (Hippocampus casscsio)
          • Coleman’s pygmy seahorse (Hippocampus colemani)
          • Tiger tail seahorse (Hippocampus comes)
          • Crowned seahorse (Hippocampus coronatus)
          • New Caledonian thorny seahorse (Hippocampus curvicuspis)
          • Softcoral seahorse (Hippocampus debelius)
          • Denise’s pygmy seahorse (Hippocampus denise)
          • Lined seahorse (Hippocampus erectus)
          • Fisher’s seahorse (Hippocampus fisheri)
          • Sea pony (Hippocampus fuscus)
          • Big-head seahorse (Hippocampus grandiceps)
          • Long-snouted seahorse (Hippocampus guttulatus)
          • Korean seahorse (Hippocampus haema)
          • Eastern spiny seahorse (Hippocampus hendriki)
          • Short snouted seahorse (Hippocampus hippocampus)
          • Thorny seahorse (Hippocampus histrix)
          • Pacific seahorse (Hippocampus ingens)
          • Japanese pygmy seahorse (Hippocampus japapigu)
          • Jayakar’s seahorse (Hippocampus jayakari)
          • Collared seahorse (Hippocampus jugumus)
          • Great seahorse (Hippocampus kelloggi)
          • Spotted seahorse (Hippocampus kuda)
          • Lichtenstein’s Seahorse (Hippocampus lichtensteinii)
          • Bullneck seahorse (Hippocampus minotaur)
          • Japanese seahorse (Hippocampus mohnikei)
          • Monte Bello seahorse (Hippocampus montebelloensis)
          • Northern spiny seahorse (Hippocampus multispinus)
          • Sodwana pygmy seahorse (Hippocampus nalu)
          • Paradoxical seahorse (Hippocampus paradoxus)
          • Hippocampus patagonicus (Hippocampus patagonicus)
          • Flatface seahorse (Hippocampus planifrons)
          • Pontoh’s pygmy seahorse (Hippocampus pontohi)
          • Pygmy thorny seahorse (Hippocampus pusillus)
          • Queensland seahorse (Hippocampus queenslandicus)
          • Satomi’s pygmy seahorse (Hippocampus satomiae)
          • Half-spined seahorse (Hippocampus semispinosus)
          • Shiho’s seahorse (Hippocampus sindonis)
          • Hedgehog seahorse (Hippocampus spinosissimus)
          • West Australian seahorse (Hippocampus subelongatus)
          • Egyptian seahorse (Hippocampus suezensis)
          • Longnose seahorse (Hippocampus trimaculatus)
          • Hippocampus tyro (Hippocampus tyro)
          • Walea pygmy seahorse (Hippocampus waleananus)
          • White’s seahorse (Hippocampus whitei)
          • Zebra seahorse (Hippocampus zebra)
          • Dwarf seahorse (Hippocampus zosterae)
        • Phycodurus - Leafy seadragons->
        • Dunckerocampus - Flagtail pipefishes->
        • Entelurus - Entelurus->
        • Corythoichthys - Corythoichthys->
        • Acentronura - Acentronura->
        • Amphelikturus - Amphelikturus->
        • Anarchopterus - Anarchopterus->
        • Apterygocampus - Apterygocampus->
        • Bhanotia - Bhanotia->
        • Bryx - Bryx->
        • Bulbonaricus - Bulbonaricus->
        • Campichthys - Campichthys->
        • Choeroichthys - Choeroichthys->
        • Enneacampus - Enneacampus->
        • Cosmocampus - Cosmocampus->
        • Cylix - Cylix->
        • Doryichthys - Doryichthys->
        • Doryrhamphus - Doryrhamphus->
        • Festucalex - Festucalex->
        • Filicampus - Filicampus->
        • Halicampus - Halicampus->
        • Haliichthys - Haliichthys->
        • Kaupus - Kaupus->
        • Heraldia - Heraldia->
        • Hippichthys - Hippichthys->
        • Histiogamphelus - Histiogamphelus->
        • Hypselognathus - Hypselognathus->
        • Ichthyocampus - Ichthyocampus->
        • Idiotropiscis - Idiotropiscis->
        • Kimblaeus - Kimblaeus->
        • Kyonemichthys - Kyonemichthys->
        • Leptoichthys - Leptoichthys->
        • Leptonotus - Leptonotus->
        • Lissocampus - Lissocampus->
        • Lophocampus - Lophocampus->
        • Maroubra - Maroubra->
        • Micrognathus - Micrognathus->
        • Microphis - Microphis->
        • Minyichthys - Minyichthys->
        • Mitotichthys - Mitotichthys->
        • Nannocampus - Nannocampus->
        • Nerophis - Nerophis->
        • Notiocampus - Notiocampus->
        • Oostethus - Oostethus->
        • Penetopteryx - Penetopteryx->
        • Phoxocampus - Phoxocampus->
        • Phyllopteryx - Phyllopteryx->
        • Pseudophallus - Pseudophallus->
        • Pugnaso - Pugnaso->
        • Siokunichthys - Siokunichthys->
        • Solegnathus - Solegnathus->
        • Stigmatopora - Stigmatopora->
        • Stipecampus - Stipecampus->
        • Syngnathoides - Syngnathoides->
        • Trachyrhamphus - Trachyrhamphus->
        • Urocampus - Urocampus->
        • Vanacampus - Vanacampus->
      • Fistulariidae - Cornetfishes->
      • Aulostomidae - Aulostomidae->
      • Centriscidae - Snipefishes and shrimpfishes->
      • Solenostomidae - Ghost pipefishes->
    • 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->
    • 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->