Actinopterygii

From Freepedia

? Ray-finned fish
Image:Herring2.jpg Atlantic herring
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Klein, 1885
Subclasses
Chondrostei Neopterygii See text for orders.

The Actinopterygii are the ray-finned fish. They are the dominant group of vertebrates, with over 27,000 species ubiquitous throughout fresh water and marine environments.

Classification

Traditionally three grades of Actinopterygii have been recognized: the Chondrostei, Holostei, and Teleostei. The second is paraphyletic and tends to be abandoned, however, while the first is now restricted to those forms closer to extant Chondrostei than to the other groups. Nearly all fish alive today are teleosts. A listing of the different groups is given below, down to the level of orders, arranged in what is believed to represent the evolutionary sequence down to the level of superorder.

• Subclass Chondrostei
  • Order Polypteriformes (bichirs)
  • Order Acipenseriformes (sturgeons, paddlefish)
• Subclass Neopterygii
  • Order Semionotiformes (gars)
  • Order Amiiformes (bowfins)
  • Infraclass Teleostei
    • Superorder Osteoglossomorpha
      • Order Osteoglossiformes (bony tongues, etc)
      • Order Hiodontiformes (mooneye, etc)
    • Superorder Elopomorpha
      • Order Elopiformes (tarpons, etc)
      • Order Albuliformes (bonefishes)
      • Order Notacanthiformes (spiny eels)
      • Order Anguilliformes (true eels, gulpers)
      • Order Saccopharyngiformes
    • Superorder Clupeomorpha
      • Order Clupeiformes (herrings & allies)
    • Superorder Ostariophysi
      • Order Gonorynchiformes
      • Order Cypriniformes (minnows & allies)
      • Order Characiformes (characins & allies)
      • Order Gymnotiformes (electric eels, knifefishes)
      • Order Siluriformes (catfishes)
    • Superorder Protacanthopterygii
      • Order Salmoniformes (salmon & allies)
      • Order Esociformes (pikes & allies)
      • Order Osmeriformes (smelts & allies)
    • Superorder Sternopterygii
      • Order Ateleopodiformes (jellynose fishes)
      • Order Stomiiformes (dragonfishes & allies)
    • Superorder Cyclosquamata
      • Order Aulopiformes (lizardfishes)
    • Superorder Scopelomorpha
      • Order Myctophiformes (lanternfishes)
    • Superorder Lampridiomorpha
      • Order Lampridiformes (opahs, etc)
    • Superorder Polymyxiomorpha
      • Order Polymixiiformes (beardfishes)
    • Superorder Paracanthopterygii
      • Order Percopsiformes (trout-perches & allies)
      • Order Batrachoidiformes (toadfishes)
      • Order Lophiiformes (goosefishes, etc)
      • Order Gadiformes (cods & allies)
      • Order Ophidiiformes (cusk eels, etc)
    • Superorder Acanthopterygii
      • Order Mugiliformes (mullets & allies)
      • Order Atheriniformes (silversides & allies)
      • Order Beloniformes (needlefishes, etc)
      • Order Cetomimiformes (whalefishes)
      • Order Cyprinodontiformes (killifishes, etc)
      • Order Stephanoberyciformes (pricklefishes, whalefishes, etc)
      • Order Beryciformes (alfonsinos, etc)
      • Order Zeiformes (dories, etc)
      • Order Gasterosteiformes (sticklebacks, pipefishes, seahorses, etc)
      • Order Synbranchiformes (swamp-eels, etc)
      • Order Tetraodontiformes (triggerfishes & allies)
      • Order Pleuronectiformes (flatfishes & allies)
      • Order Scorpaeniformes (scorpionfishes & allies)
      • Order Perciformes (perches & many allies)

External links

• * NCBI Taxonomy entry

References

• "Actinopterygii" (TSN 161061). Integrated Taxonomic Information System. N.p.: Integrated Taxonomic Information System, 2004. Accessed on 8 December 2004.