What do goldfish mean in Japanese culture?

Goldfish (金魚, kingyo)

Goldfish are not native to Japan, but were brought from China in the mid-16th century. They quickly became popular as pets, and were often given as gifts. Goldfish are a symbol of good luck and wealth in Japanese culture. They are also associated with fertility, as they reproduce quickly.

In Japan, goldfish are often kept in bowls or ponds in the garden. They are also sometimes used in festivals and ceremonies. For example, at the Gion Festival in Kyoto, goldfish are released into the Kamo River to bring good luck.