Goldfish possess genetic traits that allow them to swell up to four pounds—the size of a Chihuahua. Experts say that's why ...
In Presque Isle, Pennsylvania, a giant goldfish was caught during an electrofishing survey. It serves as a reminder of why [… ...
In an Australian first, researchers have described a new species of 15-million-year-old fossilized freshwater fish, ...
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 ...