I write about the world of biology. Native to Southeast Asia, a tiny freshwater fish packs a surprising punch with its loud calls. ... [+] Today, ichthyologists have uncovered the secret behind ...

The giant freshwater stingray may be the world’s largest freshwater fish. It’s also cloaked in mystery. No one is sure how many giant stingrays are left, which habitats they prefer ...

We identified dozens of freshwater fish species that were in trouble ... Maintaining an accurate threatened species list is important. When species are in trouble but not listed, they miss ...

The most extensive global assessment of freshwater animals to date has revealed that a quarter of all freshwater animal species on the IUCN Red List are ... % of freshwater fish and 16% of ...