The Orders of Class Osteichthyes
| Polypteriformes | bichirs |
| Acipenseriformes | sturgeons |
| Semionotiformes | garpikes |
| Amiiformes | bowfin |
| Elopiformes | tarpons |
| Anguilliformes | eels |
| Notacanthiformes | spiny eels |
| Clupeiformes | herrings |
| Osteoglossiformes | arapaima and bony tongues |
| Mormyriformes | mormyrids and gymnarchids |
| Salmoniformes | salmon, pike and stomiatoids |
| Myctophiformes | lantern fish |
| Ctenothrissiformes | macristiid (only species) |
| Gonorhynchiformes | milk fish |
| Cypriniformes | carp, characins and gymnotids |
| Siluriformes | catfish |
| Percopsiformes | sand rollers and pirate perches |
| Batrachoidiformes | toadfish |
| Gobiesociformes | clingfish |
| Lophiiformes | anglers and frogfish |
| Gadiformes | codfish and allies |
| Beryciformes | squirrel fish and whalefish |
| Atheriniformes | flying fish and killifish |
| Zeiformes | John Dory and allies |
| Lampridiformes | moonfish, earfish, ribbon-fish and mirrapinnids |
| Gasterosteiformes | sticklebacks, seahorses and pipefish |
| Channiformes | snakeheads |
| Synbranchiformes | swamp eels and cuchias |
| Scorpaeniformes | scorpionfish, gurnards and bullheads |
| Dactylopteriformes | flying gurnards |
| Pegasiformes | dragonfish and sea moths |
| Perciformes | perch and allies |
| Pleuronectiformes | flatfish |
| Tetraodontiformes | triggerfish and pufferfish |
| Crossopterygii | coelacanth (only species) |
| Dipnoi | lungfish |