Some rare fish species can be challenging to ... goldfish. Choosing the best freshwater aquarium fish is a crucial aspect of setting up and enjoying your aquarium and should not be taken lightly.

Abundant bacterioplankton were more sensitive to changes of environmental factors than rare ... freshwater lakes, whereas rare bacterioplankton did not follow this tenet. Baas-Becking, L. G. M. 1934.

Terrifying footage of a giant fish attacking a young mermaid performer in China's aquarium is going viral on social media.

This story appears in the April 2017 issue of National Geographic magazine. Hundreds of millions of people worldwide would lack their prime source of protein without freshwater fish. Yet the lakes ...

NEW ORLEANS— The U.S. Fish and Wildlife Service ... “But we’re still witnessing a freshwater extinction crisis here in the Southeast. To make sure these mighty mussels have a future, we need to ...