Sea lamprey can kill freshwater fish. Great Lakes Fish Commison Have you ever seen black spots on the skin of a trout? Or small worms burrowed in the fillets of your crappie? How about a bass that has ...

Parasitic isopods, particularly those within the family Cymothoidae, represent a remarkable example of host‐parasite coevolution in marine environments. These crustaceans attach to or embed themselves ...

Parasites give new meaning to the cliché “eat or be eaten.” Often their life cycle can be completed only if they are ingested by a host—multiple times for some—making the odds of their survival ...

Parasitic tapeworms have a complex life cycle moving from plankton to fish and then fish-eating birds. New research on how parasite resistance in threespine stickleback fish may lead to a better ...

More than 90% of popular freshwater game fish in Southern California contained an introduced parasite capable of infecting humans, according to a new study from researchers at UC San Diego’s Scripps ...

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 ...

People who eat forms of raw fish such as sashimi or nigiri should be aware of a new study that has been published by the University of Washington. The study looked into the significant increase in the ...

A parasitic crustacean living in the mouth of an Atlantic croaker after eating its tongue. Photo: Galveston Island State Park-Texas Parks and Wildlife/Facebook Wildlife officials in Texas recently ...

Scientists have discovered an extremely rare species of cymothoid from the mouth of a museum specimen of a deep-sea shark caught from the East China Sea, suggesting its wide distribution around the ...

While an abundance of parasites might seem like a bad thing, their absence actually signals trouble in the environment. Parasites are found throughout nature and are part of nearly every major animal ...