Do you think that a saltwater tank is vital for keeping stunning, exotic fish? Reevaluate that idea. Freshwater aquariums are ...

Some aquarium buddies are much more interactive than you'd expect—they follow their owners around, beg for food, and even ...

The giant freshwater stingray may be the ... The rays have also been targeted for the burgeoning aquarium trade, though it is now illegal to fish for stingrays in Thailand.

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 ...