·         Cobia

• Cod

• Cod icefish

• Codlet

• Codling

• Coelacanth

• Coffinfish

• Coho salmon

• Coley

• Collared carpetshark

• Collared dogfish

• Colorado squawfish

• Combfish

• Combtail gourami

• Combtooth blenny

• Common carp

• Common tunny

• Conger eel

• Convict blenny

• Convict cichlid

• Cookie-cutter shark

• Coolie loach

• Cornetfish

• Cowfish

• Cownose ray

• Cow shark

• Crappie

• Creek chub

• Crestfish

• Crevice kelpfish

• Croaker

• Crocodile icefish

• Crocodile shark

• Crucian carp

• Cuckoo wrasse

• Cusk

• Cusk-eel

• Cutlassfish

• Cutthroat eel

• Cutthroat trout

• Dab

• Dace

• Daggertooth pike conger

• Damselfish

• Danio

• Darter

• Dartfish

• Dealfish

• Death Valley pupfish

• Deep sea eel

• Deep sea smelt

• Deepwater cardinalfish

• ·         Deepwater flathead

• ·         Deepwater stingray

• ·         Delta smelt

• ·         Demoiselle

• ·         Denticle herring

• ·         Desert pupfish

• ·         Devario

• ·         Devil ray

• ·         Dhufish

• ·         Discus

• ·         Diver: New Zealand sand diver or long-finned sand diver

• Dogfish

• Dogfish shark

• Dogteeth tetra

• Dojo loach

• Dolly Varden trout

• Dolphin fish - Corypaena hippurus

• Dorab

• Dorado

• Dory

• Dottyback

• Dragonet

• Dragonfish

• Dragon goby

• Driftfish

• Driftwood catfish

• Drum

• Duckbill

• Duckbill eel

• Dusky grouper

• Dusky Shark - Carcharhinus obscurus

• Dwarf gourami

• Dwarf loach

• Eagle ray

• Earthworm eel

• Eel

• Eel cod

• Eel-goby

• Eelpout

• Eeltail catfish

• Eel-tailed catfish

• Elasmobranch

• Electric catfish

• Electric eel

• Electric knifefish

• Electric ray

• Elephant fish

• Elephantnose fish

• Elver

• Ember parrotfish

• Emerald catfish

• Emperor angelfish

• Emperor bream

• Escolar

• Eucla cod

• Eulachon

• European chub

• European eel

• European flounder

• European minnow

• European perch

• False brotula

• False cat shark

• False moray

• False trevally

• Fangtooth

• Fathead sculpin

• Featherback

• Fierasfer

• Fire goby

• Filefish

• Finback cat shark

• Fingerfish

• Fire bar danio

• Firefish

• Flabby whale fish

• Flagblenny

• Flagfin

• Flagfish

• Flagtail

• Flashlight fish

• Flatfish

• Flathead

• Flathead catfish

• Flier

• Flounder

• Flying gurnard

• Flying fish

• Footballfish

• Forehead brooder

• Four-eyed fish

• French angelfish

• Freshwater eel

• Freshwater hatchetfish

• Freshwater shark

• Frigate mackerel

• Frilled shark

• Frogfish

• Frogmouth catfish

• Fusilier fish

• Galjoen fish

• Ganges shark

• Gar

• Garden eel

• Garibaldi

• Garpike

• Ghost fish

• Ghost flathead

• ·         Ghost knifefish

• ·         Ghost pipefish

• ·         Ghost shark

• ·         Ghoul

• ·         Giant danio

• ·         Giant gourami

• ·         Giant sea bass

• Gibberfish

• Gila trout

• Gizzard shad

• Glass catfish

• Glassfish

• Glass knifefish

• Glowlight danio

• Goatfish

• Goblin shark

• Goby

• Golden dojo

• Golden loach

• Golden shiner

• Golden trout

• Goldeye

• Goldfish

• Gombessa

• Goosefish

• Gopher rockfish

• Gourami

• Grass carp

• Graveldiver

• Grayling

• Gray mullet

• Gray reef shark

• Great white shark

• Green swordtail

• Greeneye

• Greenling

• Grenadier

• Green spotted puffer

• Ground shark

• Grouper

• Grunion

• Grunt

• Grunter

• Grunt sculpin

• Gudgeon

• Guitarfish

• Gulf menhaden

• Gulper eel

• Gulper

• Gunnel

• Guppy

• Gurnard

• ·         Haddock

• ·         Hagfish

• ·         Hairtail

• ·         Hake

• ·         Halfbeak

• ·         Halfmoon

• ·         Halibut

• ·         Halosaur

• ·         Hamlet

• ·         Hammerhead shark

• ·         Hammerjaw

• ·         Handfish

• ·         Hardhead catfish

• ·         Harelip sucker

• Hatchetfish

• Hawkfish

• Herring

• Herring smelt

• Hickory Shad

• Hillstream loach

• Hog sucker

• Hoki

• Horn shark

• Horsefish

• Houndshark

• Huchen

• Humuhumunukunukuapua'a

• Hussar

• Icefish

• Ide

• Ilisha

• Inanga

• Inconnu

• Jack

• Jackfish

• Jack Dempsey

• Japanese eel

• Javelin

• Jawfish

• Jellynose fish

• Jewelfish

• Jewel tetra

• Jewfish

• John Dory

• Kafue pike

• Kahawai

• Kaluga

• Kanyu

• Kelp perch

• Kelpfish

• Killifish

• King of the herrings

• Kingfish

• ·         Mud minnow

• ·         Mudskipper

• ·         Mudsucker

• ·         Mullet

• ·         Mummichog

• ·         Murray cod

• ·         Muskellunge

• ·         Mustache triggerfish

• ·         Mustard eel

• Naked-back knifefish

• Nase

• Needlefish

• Neon tetra

• New World rivuline

• New Zealand smelt

• Nibble fish

• Noodlefish

• North American darter

• North American freshwater catfish

• North Pacific daggertooth

• Northern anchovy

• Northern clingfish

• Northern lampfish

• Northern pike

• Northern sea robin

• Northern squawfish

• Northern stargazer

• Nurseryfish

• Nurse shark

• Oarfish

• Ocean perch

• Ocean sunfish

• Oceanic whitetip shark

• Oilfish

• Oldwife

• Old World knifefish

• Olive flounder

• Opah

• Opaleye

• Orange roughy

• Orangespine unicorn fish

• Orangestriped triggerfish

• Orbicular batfish

• Orbicular velvetfish

• Oregon chub

• Oriental loach

• Oscar

• Owens pupfish

•  

•  

• Loosejaw

• Lost River sucker

• Louvar

• Loweye catfish

• Luderick

• Luminous hake

• Lumpsucker

• Lungfish

• Long-whiskered catfish

• Mackerel

• Mackerel shark

• Madtom

• Mahi-mahi

• Mahseer

• Mail-cheeked fish

• Mako shark

• Mandarin fish

• Manefish

• Man-of-war fish

• Manta ray

• Marblefish

• Marine hatchetfish

• Marlin

• Masu salmon

• Medaka

• Medusafish

• Megamouth shark

• Menhaden

• Merluccid hake

• Mexican golden trout

• Midshipman fish

• Milkfish

• Minnow

• Minnow of the deep

• Modoc sucker

• Mojarra

• Mola

• Monkeyface prickleback

• Monkfish

• Mooneye

• Moonfish

• Moorish idol

• Mora

• Moray eel

• Morid cod

• Morwong

• Moses sole

• Mosquitofish

• Mouthbrooder

• Mozambique tilapia

• Mrigal

• Mud catfish (Mud cat)

• Mudfish

• Mudminnow

•  

•  King-of-the-salmon

• Kissing gourami

• Knifefish

• Knifejaw

• Koi

• Kokanee

• Kokopu

• Kuhli loach

• Labyrinth fish

• Ladyfish

• Lagena[

• Lake chub

• Lake trout

• Lake whitefish

• Lampfish

• Lamprey

• Lancetfish

• Lanternfish

• Largemouth bass

• Leaffish

• Leatherjacket

• Lefteye flounder

• Lemon shark

• Lemon sole

• Lemon tetra

• Lenok

• Leopard danio

• Lightfish

• Limia

• Lined sole

• Ling

• Ling cod

• Lionfish

• Little Tunny – 

• Euthynnus alletteratus

• Livebearer

• Lizardfish

• Loach

• Loach catfish

• Loach goby

• Loach minnow

• Longfin

• Longfin dragonfish

• Longfin escolar

• Longfin smelt

• Long-finned char

• Long-finned pike

• Longjaw mudsucker

• Longneck eel

• Longnose chimaera

• Longnose dace

• Longnose lancetfish

• Longnose sucker

• Longnose whiptail catfish