A major reason why scientists know so little about giant freshwater rays is because they hide at the bottom of the river. They’re not considered a good food fish in Southeast Asia, so they’re ...

Fish can be found in freshwater ... Sharks hunt for food. They are predators. Inside their strong jaws are lots of strong pointy teeth. Pike are predators too and live in lakes.

The study, published in Science of the Total Environment, suggests that some species of zooplankton — a critical food source ...

It may shock some people to learn that goldfish can live twice as long as a dog. They’re just one of several fish species that can enjoy very long lives. This can be a blessing for owners who want to ...