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

a more colorful dominant male fish next to a more muted subordinate fish

Environment

Stress is warping these fish brains Stress is warping these fish brains

By Laura Baisas

a scan of a zebrafish with its eye highlighted in green and other parts of its anatomy stained red and blue

Science

Mapping the shifting gaze of ‘fishlets’ Mapping the shifting gaze of ‘fishlets’

By Laura Baisas

two leopards fighting in dirt

Environment

14 dramatic moments from the 2024 Nature’s Best Photo Awards 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 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 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 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 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 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 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 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 Watch an eel escape a fish’s stomach through its gills

By Laura Baisas

Science

This eyeless cavefish grows extra taste buds on its head This eyeless cavefish grows extra taste buds on its head

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 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 … 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 Fish swimming together fare better in turbulent waters

By Laura Baisas

Science

Why do we send so many fish to space? Why do we send so many fish to space?

By Briley Lewis

Common cuttlefish

Technology

Cuttlefish tentacles and origami inspired a new robotic claw Cuttlefish tentacles and origami inspired a new robotic claw

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 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 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 Get ready for the robotic fish revolution

By Annie Roth / Hakai Magazine