A goldfish is a small fish that people keep in a bowl, a tank, or a garden pond. The ones in shops are usually orange or gold-orange and a bit shiny — that colour, not the metal gold, is why they are called goldfish. They are a kind of carp.

A goldfishgoldfish（金魚）is a small fish是一種小魚 that people keep in a bowl, a tank, or a garden pond人們會養在魚缸、水族箱，或是花園的池子裡。The ones in shops店裡賣的 are usually orange or gold-orange and a bit shiny通常是橘色或金橘色，還有點亮亮的——that colour, not the metal gold是這個顏色，而不是黃金這種金屬，is why they are called goldfish才是牠們被叫做goldfish的原因。They are a kind of carp牠們是鯉魚的一種。

People in East Asia raised them for their colour hundreds of years ago, and they later became common pets in Europe too. Some stay small in a bowl; in a pond they can grow much larger. Fancy kinds may have big eyes or long flowing tails, but the ordinary orange fish is the picture most English speakers have.

People in East Asia raised them for their colour hundreds of years ago幾百年前，東亞的人因為牠們的顏色而養牠們，and they later became common pets in Europe too後來牠們也在歐洲成了常見的寵物。Some stay small in a bowl有些養在魚缸裡就會一直很小；in a pond they can grow much larger養在池子裡則可以長得大很多。Fancy kinds may have big eyes or long flowing tails特殊品種可能有大眼睛或飄逸的長尾巴，but the ordinary orange fish is the picture most English speakers have但一般英語使用者腦中的畫面，還是那種普通的橘色魚。

People also joke that someone has a goldfish memory, from the old story that a goldfish forgets things in a few seconds — though actually that story is not true; goldfish can remember for much longer. The word is everyday and informal.

People also joke that someone has a goldfish memory大家也會開玩笑說某人有「金魚腦」（goldfish memory），from the old story that a goldfish forgets things in a few seconds這來自一個老說法，說金魚幾秒鐘就會忘記事情——though actually that story is not true不過其實這個說法不是真的；goldfish can remember for much longer金魚可以記得久很多。The word is everyday and informal這個字很日常、很口語。

It is not the same as koi, a bigger patterned carp for ponds.

It is not the same as koi牠跟koi（錦鯉）不一樣，a bigger patterned carp for ponds錦鯉是一種比較大、養在池子裡、有花色的鯉魚。