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
Latest about Fish
Fish in the Mariana Trench all have the same, unique mutations
Deep-sea fish adapt to some of the most extreme conditions on Earth. New research analyzing their evolution finds the same mutation across fish species that have evolved on separate timelines — alongside human-made pollutants contaminating the deep sea.
Scientists thought sharks didn't make sounds — until this accidental discovery
Scientists noticed the clicking sound after handling the rig sharks during routine behavioral experiments.
Octopus spotted riding on top of world's fastest shark
A shortfin mako shark, the fastest-swimming shark in the world, was caught on camera with an octopus catching a ride on its back off the coast of New Zealand.
Golden scaleless cave fish discovered in China shows evolution in action
The discovery of a golden scaleless fish in China is helping scientists understand how animals evolved to live in caves.
Massive male great white shark tagged and released off Florida coast in new video
Scientists have tagged a giant male great white shark off the East Coast. The researchers said "Contender" is the largest male white shark ever caught and studied in the northwest Atlantic.
Sharks: Facts about some of the ocean's top predators
Discover interesting facts about where sharks live, how big they can get, and how likely it is to get bitten by one.
Scientists examine bloody mating wounds to reveal details of sharks' secret sex lives
Shark sex is a bitey business, with males grasping females with their teeth during the act. The resulting wounds are helping scientists to figure out when and where sharks are doing the deed.
'Mega momma' great white shark killed on drumline may reveal secrets about iconic predator
Scientists hope the body of a pregnant great white shark killed on a drumline will reveal some of the mysteries of the species' reproduction.
