Goldfish (noun)

1. A small, typically orange fish that is often kept in an aquarium or as a pet.
2. A small freshwater fish of the carp family, typically orange or yellow in color.

Origin:

The word goldfish is a compound word formed from gold and fish. it's first recorded in the english language in the 16th century.

Examples:

1. The goldfish swam gracefully in the small pond.
2. He won a goldfish at the carnival.
3. The tank was filled with colorful goldfish.
4. The goldfish were a popular attraction at the fair.
5. She kept a goldfish as a pet.