Setting up a home aquarium can be a rewarding experience, but one of the first and most crucial decisions you'll need to make is whether to go with freshwater or saltwater fish. Each option has its ...

Why keep certain fish species in groups? 10 inspiring quotes by Google CEO Sundar... 10 basic things you must know about your ...

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 ...