This category contains articles about taxa at the order level in the class Actinopterygii, the ray-finned fish. The ray-finned fish contain most of the species of fish and these are divided into 45 orders. Most of the fish known to aquarists and anglers are within this class. All 45 orders are listed below:

• Abuliformes the Bonefish
  

• Acipenseriformes including the Sturgeons and Paddlefish

• Amiiformes the Bowfins
  

• Anguilliformes including Eels
  

• Ateleopodiformes the Jellynose fish
  

• Atheriniformes including Silversides, Rainbowfish
  

• Aulopiformes including the Bombay duck and Lancetfish

• Batrachoidiformes the Toadfishes
  

• Beloniformes including the Flyingfishes
  

• Beryciformes including the Fangtooth and Pineconefish
  

• Cetomimiformes the Whalefishes
  

• Characiformes including Characins, Pencilfish, Hatchetfish, Piranhas, Tetras.
  

• Clupeiformes including Herrings, Anchovy
  

• Cypriniformes including Barbs, Carp, Danios, Goldfish, Loaches, Minnows, Rasboras
  

• Cyprinodontiformes including Live-bearing aquarium fish (livebearers), Killifish
  

• Elopiformes including the Ladyfish and Tarpon
  

• Esociformes the Pike
  

• Gadiformes including Cod
  

• Gasterosteiformes including Sticklebacks, Pipefishes, Seahorses
  

• Gonorynchiformes including the Milkfish

• Gymnotiformes including Electric eels, Knifefishes
  

• Hiodontiformes including the Mooneye and Goldeye
  

• Lampridiformes including the Oarfish, Opah and Ribbon fish
  

• Lepisosteiformes the Gars

• Lophiiformes including the Anglerfish
  

• Mugiliformes the Mullets
  

• Myctophiformes including the Lanternfish
  

• Notacanthiformes including the Halosaurs and Spiny eels
  

• Ophidiiformes including the Pearlfish
  

• Osmeriformes including the Smelts and Galaxiids

• Osteoglossiformes the Bony tongued fishes

• Perciformes - 40% of all fish including Anabantids, Bass, Cichlids, Gobies, Gouramis, Mackerel, Perches, Scats, Whiting, Wrasses
  

• Percopsiformes including the Cavefish and Trout-perch

• Pleuronectiformes the Flatfishes including Sole
  

• Polymixiifomes the Beardfish
  

• Polypterifomes including the Bichirs and Reedfish
  

• Saccopharyngiformes including the Gulper eel

• Salmoniformes including Salmon, Trout
  

• Scorpaeniformes including Scorpionfishes and the Weaver fish
  

• Siluriformes the Catfishes
  

• Stomiiformes including the Bristlemouths and Marine hatchetfishes

• Stephanoberyciformes including the Ridgehead

• Synbrachiforms including the Swamp Eel

• Tetraodontiformes including the Filefishes and Pufferfish

• Zeiformes including the Dory's
  

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