A
- Abyssal Snapper
- Alabama Cavefish
- Alaska Blackfish
- Alligator Gar
- Alpine Cave Planarian
- Alpine Char
- Alpine Newt
- American Brook Lamprey
- American Bullfrog
- American Eel
- American Lobster
- Amur Catfish
- Amur Pike
- Anglerfish
- Appalachian Crayfish
- Arctic Atlantic Salmon
- Arctic Char
- Arctic Cisco
- Arctic Cod
- Arctic Grayling
- Arctic Haddock
- Arctic Lamprey
- Arctic Omul
- Arctic Plaice
- Arctic Sculpin
- Arctic Sculpin
- Arctic Skate
- Arctic Surf Clam
- Arctic Taimen
- Asian Arowana
- Asian Swamp Eel
- Asp
- Atlantic Bluefin Tuna
- Atlantic Catfish
- Atlantic Cod
- Atlantic Coelacanth
- Atlantic Halibut
- Atlantic Herring
- Atlantic Horseshoe Crab
- Atlantic Mackerel
- Atlantic Salmon
- Atlantic Serpent
- Atlantic Tarpon
- Atlantic Wolffish
- Atlantic Wolffish
- Atolla Jellyfish
- Ayu Sweetfish
- Azores Rock Goby
B
- Baikal Nerpa
- Baikal Oilfish
- Baikal Omul
- Balkan Cave Loach
- Banded Sea Snake
- Barbel
- Barramundi
- Barreleye Fish
- Basking Shark
- Bathynomus Isopod
- Beluga Sturgeon
- Bering Wolffish
- Bighead Carp
- Black Bullhead
- Black Crappie
- Black Dragonfish
- Black Scabbardfish
- Blackmouth Catshark
- Blacknose Dace
- Blind Cave Barb
- Blind Cave Catfish
- Blind Cave Eel
- Blind Cave Loach
- Blind Cavefish
- Blobfish
- Blossom Koi
- Blue Catfish
- Blue Crab
- Blue Grotto Shrimp
- Blue Ling
- Blue Marlin
- Blue-Ringed Octopus
- Bluefin Tuna
- Bluegill
- Bluntnose Sixgill Shark
- Boiling Dace
- Boulderfin Catfish
- Bowfin
- Brook Trout
- Brown Trout
- Bullseye Snakehead
- Burbot
- Bythiospeum Snail
C
- Caldera Catfish
- Canary Volcanic Shrimp
- Capelin
- Cascade Leviathan
- Catfish
- Catla
- Cave Amphipod
- Cave Angelfish
- Cave Centipede
- Cave Crayfish
- Cave Diving Beetle
- Cave Flatworm
- Cave Isopod
- Cave Leech
- Cave Racer
- Cave Salamander
- Cave Sculpin
- Cave Spiny Newt
- Cave Spring Snail
- Cave Water Slater
- Cave Water Spider
- Cavern Darter
- Celestial Arowana
- Celtic Trout
- Central Stoneroller
- Chain Pickerel
- Chambered Nautilus
- Channel Catfish
- Cherry Salmon
- Chinese Fire Belly Newt
- Chinese Giant Salamander
- Chinese Mitten Crab
- Chinese Paddlefish
- Chinese Perch
- Chinese Softshell Turtle
- Chinook Salmon
- Chum Salmon
- Cinder Eel
- Cinderscale Perch
- Cisco
- Clown Knifefish
- Clownfish
- Cobia
- Common Bream
- Common Carp
- Common Carp
- Common Dace
- Common Nase
- Common Snapping Turtle
- Conger Eel
- Corsican Fire Salamander
- Creek Chub
- Crimson Pike
- Crucian Carp
- Crucian Carp
- Crystal Cave Shrimp
- Crystal Tetra
D
E
- Eastern Newt
- Edible Crab
- Edible Frog
- Ember Crayfish
- Ember Tetra
- European Arctic Char
- European Brook Lamprey
- European Bullhead
- European Burbot
- European Cave Goby
- European Cave Shrimp
- European Chub
- European Eel
- European Grayling
- European Lobster
- European Minnow
- European Perch
- European Pike
- European Plaice
- European Pond Turtle
- European Sea Bass
- European Weatherfish
- European Whitefish
F
G
- Ganges River Dolphin
- Geothermal Stickleback
- Geyser Fairy Shrimp
- Ghost Cave Eel
- Giant Cave Planarian
- Giant Freshwater Stingray
- Giant Grenadier
- Giant Grouper
- Giant Isopod
- Giant Mekong Catfish
- Giant Oarfish
- Giant Sea Spider
- Giant Snakehead
- Giant Squid
- Giant Stonefly Larva
- Giant Trevally
- Gilt-head Sea Bream
- Gizzard Shad
- Glacial Sturgeon
- Glacier Jellyfish
- Glacier Lanternfish
- Glass Catfish
- Glass Squid
- Goblin Shark
- Golden Mahseer
- Golden Orfe
- Golden Shiner
- Goldfish
- Goliath Grouper
- Goonch Catfish
- Grass Carp
- Great Barracuda
- Great Crested Newt
- Green Frog
- Greenland Shark
- Grotto Eel
- Grotto Leech
- Grotto Salamander
- Grotto Sculpin
- Gudgeon
- Gulper Eel
- Gwyniad
H
I
J
K
L
M
N
O
P
R
S
- Salmon
- Sauger
- Sawagani Crab
- Scaldfish
- Scaleless Dragonfish
- Schelly
- Schneider
- Sea Pig
- Sheepshead
- Shortnose Sturgeon
- Siamese Fighting Fish
- Siberian Flounder
- Siberian Sculpin
- Siberian Snow Crab
- Siberian Sturgeon
- Siberian Taimen
- Siberian White Salmon
- Signal Crayfish
- Silver Bream
- Smallmouth Bass
- Smooth Newt
- Snow Crab
- Son Doong Cave Crab
- Spectral Perch
- Spotted Bass
- Spotted Ratfish
- Spotted Wolffish
- Spring Peeper Frog
- Sterlet
- Stone Loach
- Stone Loach
- Stormfin Salmon
- Stream Mandarin Fish
- Striped Bass
- Striped Murrel
- Striped Snakehead
- Sulfur Amphipod
- Sulfur Molly
- Sulfur Spring Loach
- Summer Flounder
- Sunburst Angelfish
- Sunfish
- Svalbard Char
- Swordfish