Families: Hiodontidae (Mooneyes), Mormyroidea, Gymnarchidae, Mormyridae (Elephantfishes), Notopteridae (Featherbacks), Osteoglossidae (Bony Tongues), Pantodontidae (Butterflyfish)

Family: Albulidae

Families: Anguillidae (Freshwater Eels), Moringuidae (Spaghetti Eels), Congridae (Conger Eels), Derichthyidae (Longneck Eels), Muraenesocidae (Pike Congers), Nemichthyidae (Snipe Eels), Nettastomatidae (Duckbill Eels), Ophichthidae, Serrivomeridae (Sawtooth Eels), Synaphobranchidae, Chlopsidae (False Morays), Muraenidae (Moray Eels), Eurypharyngidae (Gulpers)

Families: Elopidae (Tenpounders), Megalopidae (Tarpons)

Family: Notacanthidae

Families: Chirocentridae, Clupeidae (Herrings, Shads), Engraulidae (Anchovies)

Families: Chanidae (Milkfish), Kneriidae (Shellears)

Families: Alestiidae, Anostomidae, Characidae (Tetras, Piranhas), Citharinidae, Ctenoluciidae (Pike-Characids), Curimatidae, Distichodontidae, Erythrinidae (Trahiras), Gasteropelecidae (Freshwater Hatchetfishes), Hemiodontidae, Hepsetidae, Lebiasinidae

Families: Balitoridae (Hillstream Loaches), Catostomidae (Suckers), Cobitidae (Loaches), Gyrinocheilidae (Algae Eaters), Cyprinidae

Families: Apteronotidae, Eigenmanniidae, Electrophoridae (Electric Knifefish, Electric Eel), Gymnotidae (Naked-Back Knifefishes), Hypopomidae, Rhamphichthyidae, Sternopygidae

Families: Amblycipitidae (Torrent Catfishes), Ariidae (Sea Catfishes), Auchenipteridae, Bagridae (Bagrid Catfishes), Callichthyidae (Callichthyid Armored Catfishes), Cetopsidae (Whalelike Catfishes), Chacidae (Squarehead Catfishes), Clariidae (Airbreathing Catfishes), Cranoglanididae (Armorhead Catfishes), Helogeneidae, Heteropneustidae (Airsac Catfishes), Ictaluridae (Bullhead Catfishes), Loricariidae (Suckermouth Armored Catfishes), Malapteruridae (Electric Catfishes), Mochokidae (Squeakers), Pangasiidae, Pimelodidae (Long-Wiskered Catfishes), Schilbeidae (Schilbid Catfishes), Siluridae (Sheatfishes), Trichomycteridae (Pencil Catfishes)