Fish

In order to investigate how eating fish affects our health as well as the oceans, author and fisherman Paul Greenberg spent a year eating fish every day.

Native cutthroat trout, an iconic part of the mountain West, thrive in cold streams. But warmer weather has allowed invaders to move in — and it's killing off the cutthroats.

New research shows the 2-inch fangblenny bites bigger fish and releases an opioid-based venom. The larger fish becomes disoriented, and the little guy gets away.

Every winter people flock to the frigid lakes of Canada and the northern U.S.A. to ice fish. According to a new study, thislow and seemingly harmless sport has some risks of injuries.

Currently, one-fourth of all fish caught globally goes to produce fishmeal and fish oil for farmed seafood, pigs and chickens. A lot of it is "food grade" and could be feeding the world's hungry.

Chicago's Shedd Aquarium released an obituary of more than 1,000 words for the recently departed 4-foot-long fish. It had arrived before the 1933 World's Fair, and was seen by some 104 million guests.

Scientists are experimenting with species' environmental DNA to find out how far and how fast it travels in streams. The technology is starting to revolutionize how we protect native animals.

Concerns about mercury contamination have led many pregnant women to under-consume seafood. So the FDA issued a new chart explaining what to eat and what to avoid. But critics say it muddles matters.

The whitefish is famous for being repulsive — and divisive. But Scandinavian-Americans in the Midwest consider their seasonal smelly-jelly feast to be an important link to their Viking ancestors.