Goldfish are among the most popular aquarium pets in the world, loved for their bright colors, peaceful personalities, and ...

Farmed fish production will have to more than double by 2050 to keep up with global demand, a report finds. And aquaculture can be far more sustainable than meat production, the researchers say.

At a ceremony at Tokyo's Akasaka palace, the president appears to grow weary of a traditional koi feeding — so he simply dumps the contents of his box of fish food. But video tells the whole tale.

Fish farms feed millions of people around the world, but they also consume a lot of fish that are dried or ground up to make aquafeed. Researchers are developing more sustainable alternatives.

Fish scale–filled pellets found by two pterosaurs are the first fossil evidence the flying reptiles regurgitated undigestible food, like some modern birds.

• We've all heard that omega-3 fatty acids are essential nutrients for nervous system, heart and brain health. Omega-3 in fish are derived from plants like algae, leaves and grass.