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SpeciesScientists Discover Mysterious New Fish in the Red Sea – and Have Never Seen It Again OceanEye to eye with Britain's hidden sharks at SharkAdemy - Oceanographic RiversIn October, biologists surveying a New York harbor for invasive fish pulled up a bright yellow one. It wasn't an invasive species at all OceanShedd Aquarium Sends Shark Eggs to Bolster Wild Populations SpeciesA rare fish has been found in Lake Ontario, North America, whose entire body is golden. It is a nati..OceanThe Great Sea Reef Is Fiji’s Wildest Dive, and a New Frontier for Conservation OceanEckerd College professor contributes to designating Biscayne Bay an Important Shark and Ray Area SpeciesRio Verde Grande Survey Identifies Fifty-Three Fish Species Facing Flow Reductions FisheriesAdams River Salmon Run in Thompson-Nicola IndiaHilsa production dropped 26% in five years, fisheries minister tells parliament SpeciesScientists Discover Mysterious New Fish in the Red Sea – and Have Never Seen It Again OceanEye to eye with Britain's hidden sharks at SharkAdemy - Oceanographic RiversIn October, biologists surveying a New York harbor for invasive fish pulled up a bright yellow one. It wasn't an invasive species at all OceanShedd Aquarium Sends Shark Eggs to Bolster Wild Populations SpeciesA rare fish has been found in Lake Ontario, North America, whose entire body is golden. It is a nati..OceanThe Great Sea Reef Is Fiji’s Wildest Dive, and a New Frontier for Conservation OceanEckerd College professor contributes to designating Biscayne Bay an Important Shark and Ray Area SpeciesRio Verde Grande Survey Identifies Fifty-Three Fish Species Facing Flow Reductions FisheriesAdams River Salmon Run in Thompson-Nicola IndiaHilsa production dropped 26% in five years, fisheries minister tells parliament

EveryFish

All fish

1,021 fish so far, best known first. 147 more are on the list to be written.

#A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

🇹🇭 Thailand and 4 moreSiamese fighting fish A small, colorful freshwater fish native to Southeast Asia, famous as a pet and for male aggression.Livebearer · Rivers and lakes · 1910

🇻🇪 VenezuelaEndler's livebearer A small, colourful freshwater fish from Venezuela known for its bright patterns and ease of breeding in home aquariums.Livebearer · Rivers and lakes · 2005

WorldAphyosemion A large genus of small African killifish kept in home aquariums.Livebearer · Rivers and lakes

🇲🇽 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

WorldKillifish Small egg-laying fish known for hardiness and short lifespansLivebearer · Rivers and lakes

🇺🇸 United StatesLeast killifish A tiny North American fish that gives birth to live young and measures just two centimetres long.Livebearer · Rivers and lakes

🇧🇷 Brazil and 1 moreLargescale four-eyes Surface-dwelling fish with split eyes for dual vision.Livebearer · Rivers and lakes · 1758

🇲🇽 MexicoButterfly splitfin A critically endangered livebearing fish from Mexico.Livebearer · Rivers and lakes · 1971

WorldTetra Common name for small freshwater characiform fishes popular in aquaria.Livebearer · Rivers and lakes

🇵🇬 Papua New GuineaForktail blue-eye A small freshwater fish from Papua New Guinea rainforests.Livebearer · Rivers and lakes 🇲🇿 MozambiqueBluefin notho A small annual killifish from Mozambique kept in aquaria.Livebearer · Rivers and lakes · 1926

🇬🇦 GabonLyretail panchax Small colourful freshwater killifish from GabonLivebearer · Rivers and lakes

🇬🇳 Guinea and 2 moreClown killi Small West African freshwater fish with ringed patternsLivebearer · Rivers and lakes · 1915

🇳🇬 Nigeria and 1 moreBlue lyretail A colourful West African killifish kept in home aquariums.Livebearer · Rivers and lakes · 1911

🇲🇽 Mexico and 2 moreMexican molly Small livebearing fish from Mexico and Central America.Livebearer · Rivers and lakes

🇺🇸 United States and 1 moreSailfin molly Small livebearing fish with a large dorsal fin in males.Livebearer · Rivers and lakes · 1821

🇲🇽 Mexico and 1 moreSouthern platyfish Small live-bearing freshwater fish from Central AmericaLivebearer · Rivers and lakes

🇲🇽 MexicoVariable platyfish Small livebearing fish from Mexico popular in home aquariumsLivebearer · Rivers and lakes

🇲🇽 Mexico and 1 moreGreen swordtail A hardy live-bearing fish popular in home aquariums.Livebearer · Rivers and lakes · 1848

🇹🇿 TanzaniaRedtail notho A small annual killifish from ZanzibarLivebearer · Rivers and lakes

🇻🇪 Venezuela and 4 moreGuppy Small tropical livebearer known for bright male colours and rapid reproduction.Livebearer · Rivers and lakes · 1859 🇺🇸 United StatesFlagfish Small Florida pupfish with a US flag patternLivebearer · Rivers and lakes · 1879

Photo credits on this page

The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.

Siamese fighting fish: Henryk Niestrój, CC BY 4.0, source
Endler's livebearer: Marrabbio2, CC BY-SA 3.0, source
Aphyosemion: Violaine2, CC BY 3.0, source
Xiphophorus: Marrabbio2, CC BY-SA 3.0, source
Killifish: TinoStrauss, CC BY-SA 3.0, source
Least killifish: Brian Gratwicke, CC BY 2.0, source
Largescale four-eyes: Michael Gäbler, CC BY 3.0, source
Butterfly splitfin: Przemysław Malkowski, CC BY-SA 3.0, source
Tetra: Holger Krisp, CC BY 3.0, source
Forktail blue-eye: Dirk Godlinski, CC BY-SA 3.0, source
Lyretail panchax: Alexander Prokoshev, CC BY-SA 3.0, source
Clown killi: Oscar le poisson, CC BY-SA 3.0, source
Blue lyretail: Violaine2, France, CC BY-SA 3.0, source
Mexican molly: Taken by Darkmax, CC BY-SA 3.0, source
Sailfin molly: (c) Nick Tobler (Cowturtle), some rights reserved (CC BY), CC BY 4.0, source
Southern platyfish: Photograph by Jere Kyyrö. Uploaded by Rasvis ., CC BY-SA 3.0, source
Green swordtail: Bastet78, CC BY-SA 3.0, source
Redtail notho: Jokuyken15, CC BY 4.0, source
Guppy: Wibowo Djatmiko ( Wie146 ), CC BY-SA 3.0, source

The weekly digest

Every Monday: the fish of the day, new pages on EveryFish, and the conferences and anniversaries of the week ahead.