goldfish (n.)youdaoicibaDictYouDict[goldfish 词源字典]
1690s, from gold (adj.) + fish (n.). The fish were introduced into England from China, where they are native. A type of carp, they are naturally a dull olive color; the rich colors (also red, black, silver) are obtained by selective breeding. Goldfish bowl, figurative of a situation of no privacy, was in use by 1935.[goldfish etymology, goldfish origin, 英语词源]