The parasites are called trematodes. Two species of the flatworms were discovered in California’s freshwater fish, according ...

Water does end up going into freshwater fish’s mouths, but instead of swallowing it, the water is filtered out through the gills. Unlike saltwater fish, freshwater fish do not need to consume ...

More than 90 percent of popular Southern California freshwater game fish sampled in a new study contained invasive worms capable of infecting humans, scientists are warning. The parasites — two ...

Share on Pinterest Researchers say freshwater fish have high levels of “forever chemicals.” Raymond Forbes LLC/Stocksy Researchers say freshwater fish caught in the United States have higher ...

More than 90% of popular freshwater game fish in Southern California contained an introduced parasite capable of infecting ...