Actinopterygii
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See text\n|}\nThe
Actinopterygii are the
ray-finned fish. They are the dominant group of
vertebrates, with over 27,000 species ubiquitous throughout
freshwater and
marine environments. They are traditionally treated as a subclass of the
Osteichthyes, or bony fish, but as that group is
paraphyletic they may be treated as a full
class.
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.
- Chondrostei\n** Order Polypteriformes (bichirs)\n** Order Acipenseriformes (sturgeons, paddlefish)\n* Order Semionotiformes (gars)\n* Order Amiiformes (bowfins)\n* Teleostei\n** Osteoglossomorpha\n*** Order Osteoglossiformes (bony tongues, etc)\n*** Order Hiodontiformes (mooneye, etc)\n** Elopomorpha\n*** Order Elopiformes (tarpons, etc)\n*** Order Albuliformes (bonefishes)\n*** Order Notacanthiformes (spiny eels)\n*** Order Anguilliformes (true eels, gulpers)\n*** Order Saccopharyngiformes\n** Clupeomorpha\n*** Order Clupeiformes (herrings & allies)\n** Ostariophysi\n*** Order Gonorynchiformes\n*** Order Cypriniformes (minnows & allies)\n*** Order Characiformes (characins & allies)\n*** Order Gymnotiformes (electric eels, knifefishes)\n*** Order Siluriformes (catfishes)\n** Protacanthopterygii\n*** Order Salmoniformes (salmon & allies)\n*** Order Esociformes (pikes & allies)\n*** Order Osmeriformes\n** Sternopterygii\n*** Order Ateleopodiformes (jellynose fishes)\n*** Order Stomiiformes (dragonfishes & allies)\n** Cyclosquamata\n*** Order Aulopiformes (lizardfishes)\n** Scopelomorpha\n*** Order Myctophiformes (lanternfishes)\n** Lampridiomorpha\n*** Order Lampridiformes (opahs, etc)\n** Polymyxiomorpha\n*** Order Polymixiiformes (beardfishes)\n** Paracanthopterygii\n*** Order Percopsiformes (trout-perches & allies)\n*** Order Batrachoidiformes (toadfishes)\n*** Order Lophiiformes (goosefishes, etc)\n*** Order Gadiformes (cods & allies)\n*** Order Ophidiiformes (cusk eels, etc)\n** Acanthopterygii\n*** Order Mugiliformes (mullets & allies)\n*** Order Atheriniformes (silversides & allies)\n*** Order Beloniformes (needlefishes, etc)\n*** Order Cetomimiformes (whalefishes)\n*** Order Cyprinodontiformes (killifishes, etc)\n*** Order Stephanoberyciformes (pricklefishes, whalefishes, etc)\n*** Order Beryciformes (alfonsinos, etc)\n*** Order Zeiformes (dories, etc)\n*** Order Gasterosteiformes (sticklebacks, pipefishes & allies)\n*** Order Synbranchiformes (swamp-eels, etc)\n*** Order Tetraodontiformes (triggerfishes & allies)\n*** Order Pleuronectiformes (flatfishes & allies)\n*** Order Scorpaeniformes (scorpionfishes & allies)\n*** Order Perciformes (perches & many allies)
External link
\n* NCBI Taxonomy entry
References
\n*"Actinopterygii." ITIS Standard Report. (Integrated Taxonomic Information System: National Museum of Natural History, Washington, D.C., 2004-04-28).
ITIS 161061
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