Goldfish

fish · pets · freshwater

Famous pet fish. Goldfish are freshwater fish and one of the most popular fish to keep in indoor aquariums around the world.

Cousins of carp. They belong to the carp family called Cyprinidae, so they're related to many other freshwater fish.

Trouble when released. When people let goldfish go in rivers and lakes, they can grow big and become an invasive pest in parts of North America and Australia.

Indoor favorites. Because they're easy to care for and pretty to watch, goldfish are a classic choice for home aquariums.