See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Cold-water fish are losing their habitats in temperate lakes due to a ...

"Fish out of water" usually means someone who’s totally out of place. Some fish didn’t get the memo. For Saturday’s Weird Animal Question of the Week, Ving Salcedo asked what type of fish can live ...

To keep your fish healthy and happy throughout their life, you need to understand how and why to change your fish tank water. There are thousands of fish breeds, and each one requires different care ...

When water temperatures get too hot, fish can become stressed or even die. In rivers, Atlantic salmon and other cold-water species sometimes escape the heat by flocking to cooler areas, which often ...

Fish live surrounded by water, so the idea that they might struggle to breathe sounds wrong at first. It feels like asking whether birds can fall out of the sky. Still, the question keeps coming up, ...

The deft wrigglings of fish forced to grow up on land could offer a glimpse of how ancient vertebrates started to make the big move out of the sea. The modern fish species called Senegal bichir ...

The theory that water-breathing animals such as fish will shrink due to global warming has been called into question by a new study. The theory that water-breathing animals such as fish will shrink ...