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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

Medium: 20 to 60 cm

Hilsa, mackerel, trout, tilapia and most food fish. 47 fish.

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🇺🇸 United States and 3 moreBlack crappie A spotted freshwater sunfish native to North America, prized by anglers for its sport and table fare.Perch-like · Rivers and lakes · 1856

🇧🇴 Bolivia and 3 moreSacabambaspis Extinct armored jawless fish from the Ordovician period of Gondwana.Ancient · Coasts and shelves · 1986

🇺🇸 United States and 1 moreAlewife A small North American herring that migrates between sea and rivers.Herring · Coasts and shelves

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

Photo credits on this page

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

Black crappie: USFWS Mountain-Prairie, Public domain, source
Sacabambaspis: Bloopityboop, CC BY-SA 4.0, source
Alewife: Unknown author, CC BY-SA 3.0, source
Largescale four-eyes: Michael Gäbler, CC BY 3.0, source

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