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

In a river of southern China, an "elongated" creature with pink fins swam through the waters. Its "large" eyes scanned the ...

Piranha is a general name used to describe a group of freshwater fish with a fearsome reputation when it comes to feeding.

Bull Sharks are another species that may cause chills. These sharks are euryhaline, meaning they can adapt to both salt and ...

(Read about the recent discovery of the world's largest freshwater fish.) “The only larvae specimen to be genetically verified as M. alexandrini was found off New South Wales, Australia ...