Fish

Whether stream or ocean, the diversity and science of fish goes deep. This is the latest on the science of swimmers.

Latest in Fish

two leopards fighting in dirt
Environment

14 dramatic moments from the 2024 Nature’s Best Photo Awards

By Popular Science Team

The ‘wild’ salmon on your menu might not be wild
Environment

The ‘wild’ salmon on your menu might not be wild

By Lauren Leffer

Jumping carp disrupt recreational boating and other water-based activities.
Environment

Chicago’s dirty water may be keeping invasive species at bay

By Lauren Leffer

As the tide of invasive Pacific pink salmon threatens to overwhelm Norway’s rivers, the locals—above on the Vestre Jakobselv—net or trap as many possible before the fish spawn and die, potentially changing the ecology of the region.
Environment

Where the rivers run pink

By Jude Isabella/Hakai Magazine

a sea robin fish with wide pectoral fins and six crab-like legs
Environment

This fish has 6 legs that act like tongues

By Laura Baisas

a spook-fish with a narrow snout and large pectoral fins
Environment

Boo! New species of ghost shark uncovered in New Zealand

By Laura Baisas

a red fish with a grumpy expression and large teeth
Environment

Seriously grumpy-faced fish discovered in Red Sea

By Laura Baisas

an illustration of a long gray coelacanth swimming in its native habitat
Science

The ‘living fossil’ that thrived during a mass extinction

By Laura Baisas

an x-ray image of an eel escaping from a fish's stomach
Environment

Watch an eel escape a fish’s stomach through its gills

By Laura Baisas

Blind cavefish
Science

This eyeless cavefish grows extra taste buds on its head

By Andrew Paul

A transparent zebrafish in a tank in a laboratory at the Pasteur Institute in Paris on June 20, 2023.
Science

Zebrafish regenerate their spinal cords in a surprising way

By Laura Baisas

A sampling of haplochromine cichlid fish.
Environment

One fish, two fish, 3,000 fish …

By Curtis Abraham / Knowable Magazine

a school of yellow and white swim near a reef
Animals

Fish swimming together fare better in turbulent waters

By Laura Baisas

Zebrafish
Science

Why do we send so many fish to space?

By Briley Lewis

Common cuttlefish
Technology

Cuttlefish tentacles and origami inspired a new robotic claw

By Andrew Paul

a small, blue fish called the Devils Hole pupfish swims in a hole
Environment

Devils Hole pupfish are clawing their way back from the brink of extinction

By Laura Baisas

a spike-toothed salmon fossil with its mouth open
Environment

This 400-pound prehistoric salmon had tusks like a warthog

By Laura Baisas

a fish robot in an aquarium
Technology

Get ready for the robotic fish revolution

By Annie Roth / Hakai Magazine

A silver gar fish with a long snout.
Environment

Meet the new king of the ‘living fossils’

By Laura Baisas

A small translucent fish with its organs visible swims in a tank.
Environment

This tiny fish is louder than an airplane taking off

By Laura Baisas