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SpeciesScientists Discover Mysterious New Fish in the Red Sea – and Have Never Seen It AgainOceanEye to eye with Britain's hidden sharks at SharkAdemy - OceanographicRiversIn October, biologists surveying a New York harbor for invasive fish pulled up a bright yellow one. It wasn't an invasive species at allOceanShedd Aquarium Sends Shark Eggs to Bolster Wild PopulationsSpeciesA 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 ConservationOceanEckerd College professor contributes to designating Biscayne Bay an Important Shark and Ray AreaSpeciesRio Verde Grande Survey Identifies Fifty-Three Fish Species Facing Flow ReductionsFisheriesAdams River Salmon Run in Thompson-NicolaIndiaHilsa production dropped 26% in five years, fisheries minister tells parliamentSpeciesScientists Discover Mysterious New Fish in the Red Sea – and Have Never Seen It AgainOceanEye to eye with Britain's hidden sharks at SharkAdemy - OceanographicRiversIn October, biologists surveying a New York harbor for invasive fish pulled up a bright yellow one. It wasn't an invasive species at allOceanShedd Aquarium Sends Shark Eggs to Bolster Wild PopulationsSpeciesA 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 ConservationOceanEckerd College professor contributes to designating Biscayne Bay an Important Shark and Ray AreaSpeciesRio Verde Grande Survey Identifies Fifty-Three Fish Species Facing Flow ReductionsFisheriesAdams River Salmon Run in Thompson-NicolaIndiaHilsa production dropped 26% in five years, fisheries minister tells parliament
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Pectoral finPelvic fin
WorldDevil firefish Venomous Indo-Pacific reef fish with feathery finsOther · Coasts and shelves · 1828 🇹🇭 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 Kryptoglanis shajii 🇮🇳 IndiaKryptoglanis shajii A tiny blind cave catfish from KeralaCatfish · Rivers and lakes WorldWhitetip reef shark Small Indo-Pacific reef shark with white-tipped finsShark · Coasts and shelves · 1837 WorldMilk shark A small coastal requiem shark found in tropical waters worldwide.Shark · Coasts and shelves · 1837 EuropeCommon rudd A red-finned freshwater fish native to Europe and Asia.Carp · Rivers and lakes WorldStriped eel catfish Venomous Indo-Pacific catfish with eel-like finsCatfish · Coasts and shelves 🇵🇾 Paraguay and 3 moreBuenos Aires tetra Hardy silver freshwater fish with red fins and a black tail mark.Other · Rivers and lakes · 1907 WorldHairy angler A deep-sea anglerfish with thread-like fins found in the Atlantic and Pacific Oceans.Shark · Deep sea · 1930 🇦🇺 AustraliaLungfish Ancient freshwater fish that breathe air and have lobed fins.Ancient · Rivers and lakes WorldThreadfin butterflyfish A tropical marine fish with a trailing dorsal filament.Reef fish · Coasts and shelves 🇦🇺 AustraliaRed handfish A rare Australian fish that crawls on the sea floor using hand-like fins.Other · Coasts and shelves · 1844 🇦🇴 Angola and 3 moreAtlantic mudskipper Semi-aquatic goby that walks on mudflats in West Africa.Other · Rivers and lakes · 1766 🇿🇦 South Africa and 4 moreWest Indian Ocean coelacanth Rare deep-sea fish with blue scales and limb-like fins.Ancient · Deep sea · 1938 WorldFire goby A colourful reef dartfish with a yellow head and red tail.Reef fish · Coral reefs WorldFeatherbacks and knifefishes Freshwater bony-tongued fishes with long anal finsOther · Rivers and lakes WorldTripod fish Deep-sea fish that stands on elongated finsOther · Open ocean 🇵🇪 PeruAgassiz's dwarf cichlid Small Amazonian cichlid with colourful males.Cichlid · Rivers and lakes Sub-Saharan AfricaFreshwater butterflyfish Surface-dwelling African fish that glides above water.Other · Rivers and lakes 🇦🇺 Australia and 1 moreThreadfin rainbowfish Small freshwater fish with long, elegant fins from Australia and New Guinea.Other · Rivers and lakes · 1974 🇳🇬 Nigeria and 1 moreBlue lyretail A colourful West African killifish kept in home aquariums.Livebearer · Rivers and lakes · 1911 🇧🇷 BrazilLemon tetra Small yellow freshwater fish from the Amazon basin.Other · Rivers and lakes 🇻🇪 VenezuelaDiamond tetra Small Venezuelan freshwater fish with violet finsOther · Rivers and lakes · 1920 WorldMoray eel A global family of elongated marine eels known for their powerful jaws and patterned skin.Eel · Coasts and shelves WorldBluefin trevally Large tropical marine predator with electric blue finsPerch-like · Coasts and shelves · 1833 WorldYellowstripe goatfish A small Indo-Pacific reef fish with yellow fins and shrimp-like taste.Other · Coasts and shelves WorldLongfin batfish A silver marine fish with elongated juvenile fins found across the Indo-Pacific.Other · Coasts and shelves WorldOrnate ghost pipefish A camouflaged reef fish with variable colours and female brood pouches.Other · Coral reefs WorldSchool shark A temperate houndshark valued for liver oil and meat.Shark · Coasts and shelves 🇹🇭 Thailand and 1 moreBala shark A large, silver cyprinid often kept in aquariums despite its size.Carp · Rivers and lakes EuropeCommon nase A migratory European cyprinid with orange tail fins.Carp · Rivers and lakes · 1758 🇹🇭 Thailand and 4 moreTinfoil barb A large Southeast Asian freshwater fish known for its red fins and silvery body.Carp · Rivers and lakes · 1853 🇮🇩 Indonesia and 1 moreTiger barb Active striped freshwater fish popular in home aquariums.Carp · Rivers and lakes 🇦🇺 AustraliaCommon roach A widespread European freshwater fish with red fins.Carp · Rivers and lakes WorldEagle ray Large oceanic rays with wing-like fins and crushing teethRay · Open ocean 🇺🇸 United States and 1 moreBat ray A large eagle ray with wing-like fins found in the eastern Pacific.Ray · Coasts and shelves 🇺🇸 United StatesSpotted ratfish Cartilaginous fish with a rat-like tail and venomous spineOther · Coasts and shelves WorldLongbill spearfish A sleek Atlantic marlin with a long bill and dark fins.Other · Open ocean · 1963 🇹🇩 Chad and 2 moreAfrican brown knifefish Nocturnal freshwater fish with a knife-shaped body and fused fins.Other · Rivers and lakes WorldHammerhead shark Sharks with T-shaped heads for better vision and sensing prey.Shark · Coasts and shelves WorldSouthern stingray A large, flat whiptail ray of the Western Atlantic.Ray · Coasts and shelves WorldBowmouth guitarfish A large, thorny ray with a W-shaped mouth found in the western Indo-Pacific.Ray · Coasts and shelves · 1801 WorldGiant guitarfish A large coastal ray found in the western Indian Ocean and Red Sea, facing severe population declines.Ray · Coasts and shelves 🇨🇦 CanadaLittle skate Small Atlantic skate known for walking on the sea floor.Ray · Coasts and shelves WorldSpinner shark A fast requiem shark known for spinning leaps out of water.Shark · Coasts and shelves · 1839 WorldBigeye thresher Deep-diving shark with huge eyes and a long tail.Shark · Open ocean · 1840 WorldLongfin mako shark A rare, deep-water mackerel shark with long pectoral finsShark · Open ocean · 1966 South AsiaWinghead shark A small hammerhead with an exceptionally wide cephalofoil.Shark · Coasts and shelves · 1822 WorldSmooth hammerhead Temperate hammerhead shark with a curved head marginShark · Coasts and shelves · 1758 WorldBlacktip shark A coastal requiem shark known for spinning leaps and black-tipped fins.Shark · Coasts and shelves · 1839 WorldLemon shark A social, yellow-skinned requiem shark of shallow tropical waters.Shark · Coasts and shelves · 1868 WorldSicklefin lemon shark Large Indo-Pacific requiem shark with sickle-shaped fins.Shark · Coasts and shelves · 1837 WorldTawny nurse shark A large Indo-Pacific carpet shark known for octopus hunting and spitting water.Shark · Coasts and shelves · 1831 WorldMullet A worldwide family of coastal ray-finned fish known for their distinct dorsal fins and historical culinary value.Other · Coasts and shelves WorldSpotted sicklefish A silvery Indo-Pacific fish with vertical black spots and sickle-shaped fins.Other · Coasts and shelves · 1758 WorldYellowtail scad Small coastal jack of the Indo-Pacific with distinctive yellow fins.Other · Coasts and shelves · 1833 🇮🇳 India and 2 moreSpadenose shark Small coastal shark with a flat snout and advanced placenta.Shark · Coasts and shelves · 1838 🇮🇳 India and 4 moreIndian flying barb A silver cyprinid with long barbels and jumping ability.Carp · Rivers and lakes · 1822 🇮🇩 Indonesia and 4 moreWalking catfish A Southeast Asian air-breathing catfish known for moving across land and surviving out of water.Catfish · Rivers and lakes 🇮🇳 India and 1 moreTor khudree A large freshwater carp native to Indian rivers, known for its silvery body and red fins.Carp · Rivers and lakes · 1838

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