Fish

sea lions playing with a pufferfish

Pass the Pufferball

California sea lions and other marine mammals engage in complex play that prepares them for life, improves their well-being—and may be just plain fun.

Latest in Fish
chinook salmon spawning in a river
A Mysterious Salmon-Killing Affliction is a Mystery No More

In California, scientists tracked the source of a severe vitamin deficiency that’s killing endangered fish.

School of Gila topminnow (Poeciliopsis occidentalis)
Love the Habitat You’re With

Locals in Tucson, Arizona are applying “reconciliation ecology” techniques to rehabilitate the region’s degraded landscapes and waterways.

three-spined stickleback (Gasterosteus aculeatus)
These Fish Can Adjust to Heatwaves—And Pass the Resilience on to Their Offspring

Though scientists aren’t quite sure how they do it, three-spined sticklebacks show an unexpected fortitude in the face of repeated heatwaves.

Shadow Fish

The modern race to save an ancient and vanishing species.

fishing boat
AI Observers Hit the High Seas

New AI analysis systems can count fish and identify species. Could they be key to making fisheries safer and less destructive?

hands holding a delta smelt
Teeny Tiny Trackers Take to the Water

A new generation of petite, submersible tracking tags offers a fresh look at the lives of little fishes.

coyote
The Coyote Next Door

What urban wildlife can teach us about cognition, survival, and how to be good neighbors.

Red Fish, Blue Fish

Mexican hogfish change colors—and sex—as they grow, perplexing scientists and attracting admirers.

Eulachon once drew thousands of people to Fishery Bay on the Nass River and fueled extensive trade networks. Far fewer Nisg̱a’a participate in the fishery today, but eulachon remain integral to their culture and cuisine.
Where the Savior Fish Still Swims

In an era of collapse, a fabled fish keeps coming back to the Nisg̱a’a nation.