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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

Very large: 1.5 to 4 m

Tuna, marlin, sturgeon, the larger sharks and rays. 203 fish.

Tiny Small Medium Large Very large Giant

WorldNile perch Large freshwater predator native to Africa, now invasive in many lakes.Other · Rivers and lakes

Southeast AsiaGiant snakehead A large freshwater predator from Southeast Asia known for air breathing and invasive potential.Other · Rivers and lakes

🇧🇷 Brazil and 4 moreArapaima Giant air-breathing freshwater fish of the AmazonOther · Rivers and lakes · 1822

WorldFourfinger threadfin A large marine threadfin found in the Indo-Pacific.Other · Coasts and shelves

🇨🇳 China and 4 moreNorthern snakehead A freshwater fish from East Asia known for its air-breathing ability and invasive spread in North America.Other · Rivers and lakes · 1842

🇦🇺 Australia and 4 moreBarramundi A catadromous fish found across the Indo-West Pacific, valued for sport and aquaculture.Other · Rivers and lakes

Photo credits on this page

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

Nile perch: Pavel Zuber, CC BY-SA 3.0, source
Giant snakehead: George Chernilevsky, Public domain, source
Arapaima: George Chernilevsky, Public domain, source
Fourfinger threadfin: Henry Sullivan Thomas, Public domain, source
Northern snakehead: USGS, Public domain, source
Barramundi: Mitch Ames, CC BY-SA 4.0, source

The weekly digest

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