Most small aquarium fish thrive in schools and need a minimum tank size of 10 to 30 gallons, depending on the species. Many species, like livebearers, can quickly multiply in an aquarium setting, ...

Saltwater and freshwater fish tanks are enjoyable to have around the home. But is one better for beginner tank owners than the other?

Cardinal tetras are famous for their glowing blue and bright red stripes that run across their bodies. People often mix them up with neon tetras, but cardinal tetras have a bright red line that goes ...

Scientists poring over decades of data from Michigan lakes found that fish are shrinking and populations are crashing thanks ...

The Oyapock river, between Brazil and French Guiana, is one of the few waterways that a new paper identifies as being relatively undamaged by humans. Sebastien Brosse Two recent assessments of the ...

These mysterious creatures undertake extraordinary journeys—a metamorphosis and migration so dramatic it rivals any in nature ...

A woman selling fish in a market in the Mekong Delta, Vietnam. From Ancient Egypt to the Zhou Dynasty to first century Palestine, fish have symbolized wealth and abundance, demonstrating the ancient ...