金鱼 in Engpsh is "goldfish". The origin of the name comes from its golden color, with "gold" being the Engpsh word for "gold" and "fish" being a type of aquatic animal.
Example sentences:
I have a pet goldfish in my aquarium.
The goldfish are swimming happily in the pond.
Example sentence translation:
我在鱼缸里养了一条金鱼。
金鱼在池塘里快乐地游着。