All fish
246 fish so far, best known first. 945 more are on the list to be written.
GroupSharkRayCarpCatfishSalmonidHerringCodTunaPerch-likeCichlidReef fishEelFlatfishLivebearerAncientOther
WaterRivers and lakesEstuaries and mangrovesCoasts and shelvesCoral reefsOpen oceanDeep seaPolar and cold seasCaves and springsBetween sea and river
WorldChaunax
A genus of deep-sea anglerfishes known for their large mouths and luring habits.Shark · Deep sea · 1846
WorldCrestfish
Deep-sea ribbon fish with a head crest and ink sacsOther · Open ocean
WorldBarreleye
Deep-sea fish with tubular eyes and a light-producing anusOther · Open ocean
WorldBristlemouths
A family of abundant deep-sea fish with bioluminescent organs and bristle-like teeth.Other · Open ocean
WorldLanternfish
Small bioluminescent mesopelagic fish found in oceans worldwide.Other · Open ocean
WorldAnglerfish
Ray-finned fish using a modified dorsal fin ray as a lure to catch prey.Other · Coasts and shelves · 1829
WorldOarfish
Extremely long pelagic fish known for their ribbon-like bodies and association with sea serpent myths.Other · Open ocean · 1772
WorldGrenadiers
Deep-sea gadiform fish with slender bodies and long tails, found globally in ocean depths.Other · Deep sea · 1765
WorldHagfish
Eel-shaped jawless marine animals known for producing vast amounts of slime.Eel · Open ocean
WorldDanio
A genus of small striped freshwater fish from Asia kept in aquaria.Other · Rivers and lakes · 1822
WorldRasbora
A diverse genus of small freshwater fish native to South and Southeast Asia.Carp · Rivers and lakes · 1822
🇲🇽 Mexico and 3 moreXiphophorus
A genus of small livebearing fish native to Mexico and Central America, known for aquarium use and genetic research.Livebearer · Rivers and lakes
🇦🇺 Australia and 2 moreRainbowfish
Small colourful freshwater fish from Australia and New GuineaOther · Rivers and lakes · 1894
🇦🇷 Argentina and 4 moreArgentinian silverside
A large, adaptable silverside native to South America.Other · Rivers and lakes
WorldKillifish
Small egg-laying fish known for hardiness and short lifespansLivebearer · Rivers and lakes
WorldArowana
Freshwater bony fish with a toothed bone in the mouth and air-breathing ability.Ancient · Rivers and lakes · 1831
WorldHumpback anglerfish
Deep-sea black seadevil with a glowing lureOther · Open ocean · 1863
WorldPelican eel
A deep-sea eel with a massive hinged jaw and ultra-black skin found in all oceans.Eel · Deep sea
WorldTriplewart seadevil
A deep-sea anglerfish with extreme sexual dimorphism and parasitic males.Other · Deep sea · 1883
WorldSloane's viperfish
Deep-sea dragonfish with huge teeth and light organsOther · Open ocean · 1801
WorldBlack dragonfish
Deep-sea fish with infrared light and stalked larval eyesOther · Open ocean
WorldBarreleye
Deep-sea argentiniform fish with transparent heads and tubular eyes.Other · Deep sea
WorldGiant oarfish
The world's longest ray-finned fish, known for its ribbon-like body and crimson crest.Other · Open ocean · 1772
🇦🇺 Australia and 1 moreBlobfish
A gelatinous deep-sea fish from Australia and New Zealand waters.Other · Deep sea
WorldSlender snipe eel
A deep-sea eel with a bird-like beak and extreme length.Eel · Open ocean
WorldBlack swallower
Deep-sea fish that eats prey larger than itselfOther · Open ocean
WorldPacific blackdragon
Deep-sea fish with light-absorbing skin and a glowing chin lure.Other · Open ocean
🇨🇦 Canada and 1 moreAtlantic hagfish
A jawless marine scavenger known for its slime and lack of true eyes.Ancient · Deep sea · 1758
WorldRoundnose grenadier
A large deep-sea fish from the northern Atlantic Ocean with a rounded head and long tail.Other · Deep sea
WorldTripod fish
Deep-sea fish that stands on elongated finsOther · Open ocean
🇯🇵 Japan and 1 moreGiant grenadier
A large deep-sea rattail from the North Pacific.Other · Open ocean
🇺🇸 United StatesLeast killifish
A tiny North American fish that gives birth to live young and measures just two centimetres long.Livebearer · Rivers and lakes
🇺🇸 United States and 4 moreMosquitofish
Small North American fish introduced globally for mosquito control.Livebearer · Rivers and lakes
🇺🇸 United StatesEastern mosquitofish
A small livebearing fish native to the eastern US, now invasive in many regions.Livebearer · Rivers and lakes · 1859
🇯🇵 JapanJapanese rice fish
Small freshwater fish native to Japan and a key model organism.Other · Rivers and lakes
🇧🇷 Brazil and 1 moreLargescale four-eyes
Surface-dwelling fish with split eyes for dual vision.Livebearer · Rivers and lakes · 1758
🇧🇷 Brazil and 4 moreSerpae tetra
Small red freshwater fish from South AmericaOther · Rivers and lakes · 1882
🇧🇷 Brazil and 4 moreRed-bellied piranha
A widespread South American freshwater fish known for its omnivorous diet and shoaling behavior.Other · Rivers and lakes
🇧🇷 Brazil and 1 moreRed-bellied Pacu
A large South American freshwater fish related to piranhas, farmed for food and kept in aquariums.Other · Rivers and lakes
🇲🇽 MexicoButterfly splitfin
A critically endangered livebearing fish from Mexico.Livebearer · Rivers and lakes · 1971
WorldHeadstander
South American freshwater fish known for swimming with their heads pointed downwards.Other · Rivers and lakes
🇨🇳 ChinaButterfly loach
A small, flat freshwater loach from fast Chinese streams.Other · Rivers and lakes
🇰🇭 Cambodia and 4 moreGyrinocheilus aymonieri
A Southeast Asian freshwater fish known for its suction-like mouth and role in the aquarium trade.Other · Rivers and lakes
🇨🇳 ChinaTelescope goldfish
Fancy goldfish breed with large protruding eyesCarp · Rivers and lakes
🇯🇵 JapanRanchu
A hooded goldfish breed from Japan with no dorsal fin and a rounded body.Other · Rivers and lakes
WorldTetra
Common name for small freshwater characiform fishes popular in aquaria.Livebearer · Rivers and lakes
🇧🇷 BrazilBlack arowana
A South American freshwater fish known for its dark colour and jumping hunting style.Other · Rivers and lakes
🇮🇩 Indonesia and 4 moreAsian arowana
Large freshwater fish from Southeast Asia known for its metallic scales and cultural significance.Ancient · Rivers and lakes · 1840
Photo credits on this page
The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.
- Chaunax: Robert Mintern, Public domain, source
- Crestfish: Unknown author, Public domain, source
- Barreleye: S. Johnsen (Duke Uni.) for courtesy of photos, J. Hlidberg for courtes, CC BY 4.0, source
- Bristlemouths: Unknown author, Public domain, source
- Lanternfish: Emma Kissling, Public domain, source
- Anglerfish: Unknown author, Public domain, source
- Oarfish: Sandstein, CC BY 3.0, source
- Grenadiers: Unknown author, Public domain, source
- Hagfish: Ocean Observatories Initiative, Public domain, source
- Danio: Soulkeeper, Public domain, source
- Rasbora: Captain R C Beavan, Public domain, source
- Xiphophorus: Marrabbio2, CC BY-SA 3.0, source
- Rainbowfish: Eileen Kortright ( Roan Art ), CC BY 2.5, source
- Argentinian silverside: CHUCAO, CC BY-SA 3.0, source
- Killifish: TinoStrauss, CC BY-SA 3.0, source
- Arowana: User:Qwertzy2, CC BY-SA 3.0, source
- Humpback anglerfish: Emőke Dénes, CC BY-SA 4.0, source
- Pelican eel: Unknown author, Public domain, source
- Triplewart seadevil: Dr Tony Ayling, CC BY-SA 1.0, source
- Sloane's viperfish: Gervais et Boulart, Public domain, source
- Black dragonfish: GM. Woodward, Public domain, source
- Barreleye: Unknown author, Public domain, source
- Blobfish: Alan Riverstone McCulloch (1885-1925), Public domain, source
- Slender snipe eel: Unknown author, Public domain, source
- Black swallower: Unknown author, Public domain, source
- Pacific blackdragon: Unknown author, Public domain, source
- Roundnose grenadier: Carl Nielsen, Public domain, source
- Tripod fish: null, CC BY 4.0, source
- Giant grenadier: Joe Mabel, CC BY-SA 4.0, source
- Least killifish: Brian Gratwicke, CC BY 2.0, source
- Mosquitofish: NOZO, CC BY-SA 3.0, source
- Eastern mosquitofish: JeffreyGammon, CC BY-SA 4.0, source
- Japanese rice fish: NOZO, CC BY 3.0, source
- Largescale four-eyes: Michael Gäbler, CC BY 3.0, source
- Red-bellied piranha: Gregory Moine, CC BY 2.0, source
- Red-bellied Pacu: Omnitarian, CC BY-SA 3.0, source
- Butterfly splitfin: Przemysław Malkowski, CC BY-SA 3.0, source
- Headstander: Brian Gratwicke, CC BY 2.0, source
- Butterfly loach: Lerdsuwa, CC BY-SA 3.0, source
- Gyrinocheilus aymonieri: Pseudogastromyzon, Public domain, source
- Telescope goldfish: Lawrencekhoo, CC BY-SA 4.0, source
- Ranchu: Lerdsuwa, CC BY-SA 4.0, source
- Tetra: Holger Krisp, CC BY 3.0, source
- Black arowana: Dương Vinh Hoàng, CC BY-SA 4.0, source
- Asian arowana: Marcel Burkhard, CC BY-SA 3.0, source