A McDonald's customer recently posted on Reddit after finding a parasite in a Filet-O-Fish sandwich. Commenters on the thread quickly pointed out that this is actually common in wild-caught fish.

More than 90% of popular freshwater fish in Southern California are carrying human-infecting parasites, researchers say. This poses a significant danger for those who like to eat freshly caught ...

At the heart of the Amazon researchers are investigating a mysterious parasite which is devastating fish farms around the world. At the heart of the Amazon researchers are investigating a mysterious ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Southern Californians have been warned that more than 90 percent of ...

They’re tiny, they’re widespread, and they’re inside the fish you might be grilling this weekend. Stacey Leasca is an award-winning journalist with nearly two decades of newsroom experience. She is ...

Klamath River salmon are facing elevated infection rates of the parasite Ceratonova shasta (C. shasta) this spring, a setback tribal scientists say reflects harsh water conditions rather than any ...