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Acipenseriformes Acipenseridae Sturgeon Polyodontidae Paddlefish Ambassidae Ambassis Chanda Denariusa Gymnochanda Parambassis Glassfish Amiidae Amia Bowfins Arapaimidae Arapaima Arapaima Batrachoididae Batrachoidinae Halophryninae Toadfish Beloniformes Belonoidei Halfbeaks Adrianichthyidae Rice Fish Needlefish Blenniidae Blenniinae Blennies Salariinae Blennies. Usually marine fish there is at least one Freshwater species. cave Astynax Barbatula Iranocypris Lucifuga Milyeringa Nemacheilus Starostin's loach (Troglocobitis) Neolissochilus Oreonectes (Cypriniformes: Nemacheilidae) Phreatichthys Prietella Sinocyclocheilus Speolabeo Tor Largest known subterranean fish Triplophysa Typhlichthys Blind cave fish. In several places around the world fish have evolved cit off from all light for a very long time. Although not necessarily related to each other there are grouped here instead out of ichthyological curiosity. Oliver Lucanus wrote a good article about these fish here. Centrarchiformes Centrarchoidei Cirrhitoidei Percalatoidei Percichthyoidei Terapontoidei Sunfish Dipnoi Neoceratodontidae Lungfish Protopteridae Lungfish. These primitive dinosaur era fishes are in an order by themselves and are very unlike modern fish; humans share a common ancestor with them. Engraulidae Amazonsprattus Anchovies. Mostly marine, there are some freshwater anchovies. Esociformes Umbridae Mud Minnows Gadiformes Gadidae Galaxioidea Galaxiidae Smelts Retropinnidae Galaxids. Superfamily : Galaxioidea Gasterosteidae Culaea Gasterosteus Pungitius Sticklebacks Gonorynchiformes Chanoidei Gonorynchoidei Knerioidei Gymnotiformes Apteronotidae Gymnotidae Hypopomidae Notopteridae Rhamphichthyidae Sternopygidae Knife Fish

Indostomas Paradoxus Paradox fish Lepisosteiformes Lepisosteidae Gars. Lobotiformes Datnioididae Hapalogenyidae Lobotidae Tiger fish Mormyridae Brienomyrus Campylomormyrus Isichthys Marcusenius Petrocephalus Pollimyrus Baby Whales and Elephant fish. One of the most evolved and intelligent of fishes, all possess an electrical system used to at the very least serve as an addition sense. All are on different frequencies so the possibility exists they communication with some sort of fish wifi. If you were intelligent and had something like this how cold you not use it for at least some soft of communication? This might explain the different frequencies? Mugilidae Crenimugil Dajaus Mullet Ophidiiformes Bythitoidei Ophidioidei Osteoglossidae Scleropages Osteoglossum Arrowana Pantodontidae Pantodon Butterfly fish Percopsiformes Amblyopsidae Aphredoderidae Percopsidae Springfish Pleuronectiformes Pleuronectoidei Psettodoidei Soleoidei Flatfish Polycentridae Afronandus Monocirrhus Polycentropsis Polycentrus Leaf fish Polypteridae Erpetoichthys Rope fish Polypterus Bichir Potamotrygonidae Heliotrygon Paratrygon Plesiotrygon Potamotrygon Rays Scatophagidae Scatophagus Scats Scorpaeniformes Cottidae Sculpins Tetrarogidae Scorpion fish Syngnathidae Nerophinae Syngnathinae Pipefish Tarumaniidae Tarumania Dinofish. A family erected for a single primative species of fish nearly halfway between an eel and wolf fish (Holpias) that has an inflatable adipose fin.