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 ...

Remaining dace populations are jeopardized by drought, high intensity wildfires, flooding, invasive species and rapid climate change. “We’ve already lost seven of our state’s unique freshwater fish ...

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