This post is a list of popular fish. This list was generated with the help of Google Search. There are 65 species listed below alphabetically. Wikipedia says, "Fish are gill-bearing aquatic craniate animals that lack limbs and digits." (Wikipedia: Fish, 10.23.22 UTC 23:48)
Angelfish (Pterophyllum)
Photo source: Wikimedia Commons, Marrabbio2
License: CC BY-SA 3.0
Anglerfish (Lophiiformes)
Photo source: Wikimedia Commons, National Geographic
License: CC BY-SA 4.0
Anchovy (Engraulidae)
Photo source: Wikimedia Commons, SEFSC Pascagoula Labratory
License: CC BY 2.0
Barracuda (Sphyraenidae)
Photo source: Wikimedia Commons, Hectonichus
License: CC BY-SA 4.0
Blue tang (Paracanthurus)
Photo source: Wikimedia Commons, H. Krisp
License: CC BY 3.0
Bluegill (Lepomis macrochirus)
Photo source: Wikimedia Commons, 종현
License: CC BY-SA 3.0
Bream (Abramis brama)
Photo source: Wikimedia Commons, Микова Наталия
Butterflyfish (Chaetodontidae)
Photo source: Wikimedia Commons, Rickard Zerpe
License: CC BY 2.0
Carp (Cyprinidae)
Photo source: Wikimedia Commons, Fabio Poggi
License: CC BY 3.0
Catfish (Siluriformes)
Photo source: Wikimedia Commons, Linie29
License: CC BY-SA 3.0
Clownfish (Amphiprioninae)
Photo source: Wikimedia Commons, Nhobgood
License: CC BY-SA 3.0
Cod (Gadus)
Photo source: Wikimedia Commons, Hans-Petter Fjeld
License: CC BY-SA 2.5
Coelacanth (Latetimeria chalumae)
Photo source: Wikimedia Commons, JaffaFalcon
License: CC BY-SA 4.0
Dace (Leuciscus)
Photo source: Wikimedia Commons, Citron
License: CC BY-SA 3.0
Dab (Limanda)
Photo source: Wikimedia Commons, Jonathan Couch
Eel (Angulliformes)
Photo source: Wikimedia Commons, Sebastien Vasquez
License: CC BY-SA 4.0
Flier (Centrarchus macropterus)
Photo source: Wikimedia Commons, Fredlyfish4
License: CC BY-SA 3.0
Flounder
Photo source: Wikimedia Commons, Tiit Hunt
License: CC BY-SA 3.0
Fusilier (Caesionidae)
Photo source: Wikimedia Commons, Rickard Zerpe
License: CC BY 2.0
Gar
Photo source: Wikimedia Commons, Tino Strauss
License: CC BY-SA 2.5
Goldfish (Carassius auratus)
Photo source: Wikimedia Commons, Lerdsuwa
License: CC B-SA 3.0
Grayling (Thymallus thymallus)
Photo source: Wikimedia Commons, Murrabbio2
License: CC BY-SA 3.0
Grouper (Epinephelinae)
Photo source: Wikimedia Commons, Amada44
License: CC BY 3.0
Guppy (Poecilia reticulata)
Photo source: Wikimedia Commons, 5snake5
License: CC0 1.0
Hagfish (Myxinidae)
Halfbeak (Hemiramphidae)
Photo source: Wikimedia Commons, NOAA
License: CC BY 2.0
Halibut (Hippoglossus)
Photo source: Wikimedia Commons, Kruger
Herring (Clupea harengus)
Photo source: Wikimedia Commons, Uwe Kils
License: CC BY-SA 3.0
Jewelfish (Hemichromis)
Photo source: Wikimedia Commons, Mramorn
License: CC BY-SA 3.0
Kribensis (Pelvicachromis)
Photo source: Wikimedia Commons, Tino Strauss
License: CC BY-SA 3.0
Leafy seadragon (Phycodurus eqes)
Photo source: Wikimedia Commons, Sage Ross
License: CC BY-SA 3.0
Lionfish (Pterois)
Photo source: Wikimedia Commons, Christian Mehlfuhrer
License: CC BY 2.5
Longhorn cowfish (Lactoria cornuta)
Photo source: Wikimedia Commons, Michael Apel
License: CC BY-SA 3.0
Lungfish (Dipnoi)
Photo source: Wikimedia Commons, Guillaume Baviere
License: CC BY-SA 2.0
Mackerel
Photo source: Wikimedia Commons, Izuzki
License: CC BY-SA 3.0
Mahi-mahi (Coryphaena hippurus)
Photo source: Wikimedia Commons, Marcus Elieser Bloch
License: CC BY 2.0
Mandarinfish (Synchiropus splendidus)
Photo source: Wikimedia Commons, Luc Viator
License: CC BY-SA 3.0
Marlin (Istiophoridae)
Photo source: Wikimedia Commons, Kawahara Keiga
Oarfish (Regalecidae)
Photo source: Wikimedia Commons, M. E. Blochii
License: CC BY 2.0
Parrotfish (Scaridae)
Photo source: Wikimedia Commons, Rickard Zerpe
License: CC BY 2.0
Perch (Perca)
Photo source: Wikimedia Commons, Robert Colletta
Pike (Esox lucius)
Photo source: Wikimedia Commons, Jik jik
License: CC BY-SA 3.0
Piranha (Serrasalminae)
Photo source: Wikimedia Commons, Bjoertvedt
License: CC BY-SA 4.0
Pollock (Pollaachius)
Photo source: Wikimedia Commons, Tino Strauss
License: CC BY-SA 3.0
Pouting (Trisopterus luscus)
Photo source: Wikimedia Commons, Gervais et Boulart
Pufferfish (Tetraodontidae)
Photo source: Wikimedia Commons, Karelj
License: CC BY-SA 3.0
Rockfish (Sebastidae)
Photo source: Wikimedia Commons, Yann Kemper
License: CC0 1.0
Rockling (Lotidae)
Photo source: Wikimedia Commons, Derek Keats
License: CC BY 2.0
Rudd (Scardinius)
Photo source: Wikimedia Commons, lidkk
License: CC BY-SA 4.0
Salmon (Salmonidae)
Photo source: Wikimedia Commons, Timothy Knepp
Sawfish (Pristis)
Photo source: Wikimedia Commons, DAVID ILIFF (Diliff)
License: CC BY-SA 3.0
Seahorse (Hippocampus)
Photo source: Wikimedia Commons, Javier Yaya Tur / Ciudad de las Artes y las Ciencias
License: CC BY 2.0
Siamese fighting fish (Betta splendens)
Photo source: Wikimedia Commons, Eric Savage
License: CC BY-SA 2.0
Shark (Selachimorpha)
Photo source: Wikimedia Commons, Albert kok
License: CC BY-SA 3.0
Snapper (Lutjanidae)
Photo source: Wikimedia Commons, Julein Bidet and MDC Seamarc
License: CC BY-SA 4.0
Stingray (Myliobatidae)
Photo source: Wikimedia Commons, Nicholas Lindell Reynolds
License: CC BY-SA 4.0
Stonefish (Synanceiidae)
Photo source: Wikimedia Commons, Karelj
License: CC BY-SA 3.0
Sturgeon (Acipenseridae)
Photo source: Wikimedia Commons, B kimmel
License: CC BY-SA 4.0
Sunfish (Centrarchidae)
Photo source: Wikimedia Commons, Eric Engbretson
Tarpon (Megalopidae)
Photo source: Wikimedia Commons, Daiju Azuma
License: CC BY-SA 4.0
Tetra
Photo source: Wikimedia Commons, Andre Karwath (Aka)
License: CC BY-SA 2.5
Tilapia
Photo source: Wikimedia Commons, Germano Roberto Schuur
License: CC BY-SA 4.0
Trout
Photo source: Wikimedia Commons, Eric Engbretson and U.S. Fish and Wildlife Service
Tuna (Thunnus)
Photo source: Wikimedia Commons, NOAA
Zebrafish (Danio rerio)
Photo source: Wikimedia Commons, Leopard Danio
License: CC BY 2.0