When to use goldfish in Korean
Korean: 금붕어[ geum-bung-eo ]

When to use it
A goldfish is a small fish that people often keep as a pet in a bowl or tank. The word (금붕어) is used when talking about this orange or red pet fish in everyday life. You can use it when speaking about pets, stores, or things you see at home or outside.
Example sentences
우리 집에는 금붕어 두 마리가 있어요.
There are two goldfish at my house.
나는 금붕어에게 밥을 줘요.
I feed the goldfish.
학교 앞 가게에서 금붕어를 봤어요.
I saw goldfish at the shop in front of the school.
공원 연못에 금붕어가 있어요.
There are goldfish in the park pond.
엄마가 금붕어 어항을 샀어요.
Mom bought a fish tank for the goldfish.
여행 갔을 때 큰 금붕어를 봤어요.
I saw a big goldfish when I went on a trip.