A major reason why scientists know so little about giant freshwater rays is because they hide at the bottom of the river. They’re not considered a good food fish in Southeast Asia, so they’re ...

Millions of people rely on freshwater fish for food and as a source of income through angling and the pet trade. But numbers have plummeted due to pressures including pollution, unsustainable ...

The study, published in Science of the Total Environment, suggests that some species of zooplankton — a critical food source ...