Nijssen’s Hypopygus  (Hypopygus nijsseni)

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->

      • Gymnotidae - Naked-back knifefishes->
      • Apteronotidae - Ghost knifefish->
      • Hypopomidae - Bluntnose knifefishes->

        • Akawaio - Akawaio->
        • Brachyhypopomus - Brachyhypopomus->
        • Hypopomus - Hypopomus->
        • Hypopygus - Hypopygus->

          • Hypopygus benoneae (Hypopygus benoneae)
          • Hoedeman’s Hypopygus (Hypopygus hoedemani)
          • Isbrucker’s Hypopygus (Hypopygus isbruckeri)
          • Hypopygus lepturus (Hypopygus lepturus)
          • Hypopygus minissimus (Hypopygus minissimus)
          • Hypopygus neblinae (Hypopygus neblinae)
          • Nijssen’s Hypopygus (Hypopygus nijsseni)
          • Ortega’s Hypopygus (Hypopygus ortegai)
        • Microsternarchus - Microsternarchus->
        • Procerusternarchus - Procerusternarchus->
        • Racenisia - Racenisia->
        • Steatogenys - Steatogenys->
        • Stegostenopos - Stegostenopos->
      • Rhamphichthyidae - Sand knifefishes->
      • Sternopygidae - Glass knifefishes->
    • 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->