Panuco swordtail  (Xiphophorus nigrensis)

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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->

      • Poeciliidae - Poeciliids->

        • Gambusia - Gambusia->
        • Poecilia - Poecilia->
        • Belonesox - Pike topminnow->
        • Poeciliopsis - Poeciliopsis->
        • Alfaro - Alfaro->
        • Brachyrhaphis - Brachyrhaphis->
        • Carlhubbsia - Carlhubbsia->
        • Cnesterodon - Cnesterodon->
        • Girardinus - Girardinus->
        • Heterandria - Heterandria->
        • Heterophallus - Heterophallus->
        • Limia - Limia->
        • Micropoecilia - Micropoecilia->
        • Neoheterandria - Neoheterandria->
        • Pamphorichthys - Pamphorichthys->
        • Phallichthys - Phallichthys->
        • Phalloceros - Phalloceros->
        • Phalloptychus - Phalloptychus->
        • Phallotorynus - Phallotorynus->
        • Priapella - Priapella->
        • Priapichthys - Priapichthys->
        • Pseudopoecilia - Pseudopoecilia->
        • Pseudoxiphophorus - Pseudoxiphophorus->
        • Quintana - Quintana->
        • Scolichthys - Scolichthys->
        • Tomeurus - Tomeurus->
        • Xenodexia - Xenodexia->
        • Xenophallus - Xenophallus->
        • Xiphophorus - Xiphophorus->

          • Chiapas swordtail (Xiphophorus alvarezi)
          • Spiketail platyfish (Xiphophorus andersi)
          • Sheepshead swordtail (Xiphophorus birchmanni)
          • Yellow swordtail (Xiphophorus clemenciae)
          • Short-sword platyfish (Xiphophorus continens)
          • Delicate swordtail (Xiphophorus cortezi)
          • Monterrey platyfish (Xiphophorus couchianus)
          • Puebla platyfish (Xiphophorus evelynae)
          • Northern platyfish (Xiphophorus gordoni)
          • Green swordtail (Xiphophorus hellerii)
          • Xiphophorus kallmani (Xiphophorus kallmani)
          • Xiphophorus kosszanderi (Xiphophorus kosszanderi)
          • Southern platyfish (Xiphophorus maculatus)
          • Highland swordtail (Xiphophorus malinche)
          • Xiphophorus mayae (Xiphophorus mayae)
          • Marbled swordtail (Xiphophorus meyeri)
          • Catemaco platyfish (Xiphophorus milleri)
          • Mixe swordtail (Xiphophorus mixei)
          • Montezuma swordtail (Xiphophorus montezumae)
          • Southern mountain swordtail (Xiphophorus monticolus)
          • Xiphophorus multilineatus (Xiphophorus multilineatus)
          • Mountain swordatail (Xiphophorus nezahualcoyotl)
          • Panuco swordtail (Xiphophorus nigrensis)
          • Pygmy swordtail (Xiphophorus pygmaeus)
          • Xiphophorus roseni (Xiphophorus roseni)
          • Xiphophorus signum (Xiphophorus signum)
          • Variable platyfish (Xiphophorus variatus)
          • Swordtail platyfish (Xiphophorus xiphidium)
      • Aphaniidae - Oriental killifishes->
      • Valenciidae - Valencia toothcarp->
      • Fundulidae - North American killifishes->
      • Cyprinodontidae - Pupfishes->
      • Anablepidae - Four-eyed fishes, onesided livebearers and white-eye->
      • Aplocheilidae - Killifishes->
      • Cynolebiinae - Pearl killifishes->
      • Fluviphylacidae - American lampeyes->
      • Goodeidae - Splitfins->
      • Nothobranchiidae - African rivulines->
      • Pantanodontidae - Spine killifishes->
      • Procatopodidae - African lampeyes->
      • Profundulidae - Middle American killifishes->
      • Rivulidae - Rivulines->
    • 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->