Betta, or Siamese fighting, fish are among "the most popular freshwater aquarium fish in the world," PetMD reports. Native to ...

If you’re searching for an uncomplicated, cute fish to put in your freshwater tank, look no further than the white skirt tetra. Learn more about caring for this popular freshwater fish in the ...

The World's Forgotten Fishes report is a celebration of freshwater fishes – and it’s a call to action too. Rivers, lakes and wetlands are among the most biodiverse places on earth. They cover less ...

These are the world’s longest-lived freshwater fish. Some reach 127 years old, a feat previously thought impossible for ...