Fish have filled Earth's oceans, lakes and rivers for half a billion years, and while we know much about our aquatic friends, like the saying goes, there are plenty more fish in the sea to learn about.
Live Science brings you the latest discoveries about fish, from the fossils of giant ancient fish that likely preyed on humans' ancestors to the living unicorn-like blind fish dwelling deep in Chinese caves. We dive into facts about iconic aquatic animals like great white sharks, the world's largest predatory fish, and if you just want to stare at photos of the freakiest-looking fish, we’ve got you covered there too. Our expert writers and editors are here to serve all your aquatic curiosities with the latest fish news, features and articles.
Discover more about fish
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Scientists put cameras on whale sharks for the first time and saw something they'd never seen beforeAnimal-borne cameras have revealed that the world's largest fish spends far more time feeding below the surface than scientists realized.
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How to watch 'Expedition X: Atomic Sharks' – stream 'Shark Week' 2026 from anywhereHow to watch "Expedition X: Atomic Sharks" online, as Phil Torres and Heather Amaro investigate the effects of nuclear fallout on the Marshall Islands' waters.
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'Demon cavefish' discovered under WWII chemical weapons facility in AlabamaIntroducing demon cavefish ( Demogorgonichthys arcanus); the rare eyeless predators that have been hiding in plain sight below a military base for decades.
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How to watch 'Jurassic Sharks' online – stream 'Shark Week' 2026 from anywhereHow to watch "Jurassic Sharks" online from anywhere, with the special set to use visual effects to flesh out the fossils of ancient cartilaginous fish.
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How to watch 'Air Jaws: Red, White and Breach' – stream 'Shark Week' 2026 from anywhereHow to watch "Air Jaws: Red, White and Breach" online, as Jeff Kurr, Alison Towner and Andy Casagrande aim to capture breaching great white sharks on film.
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Never-before-seen shark that 'walks' on land discovered off Papua New GuineaDivers in Papua New Guinea recently discovered a new species of carpet shark that can traverse low-lying reefs.
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'I never thought we'd see one alive': Elusive goblin shark captured on camera for the first timeResearchers have filmed goblin sharks in the deep sea for the first time. Until now, these sharks had been seen alive only after being hauled up to the surface with fishing lines.
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First whole-genome sequence of a Greenland shark holds clues to their extreme longevityA genomic study of Greenland sharks, thought to be the longest-lived vertebrates on the planet, is hinting at the secrets to their epic lifespan and cancer resistance.
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'A combination of amazement and horror': Hitchhiker fish hide in manta ray buttholesHitchhiker fish known as remoras have a very unexpected hiding place: the rear ends of manta rays.
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