This is the lightweight version of this research. If you want to read the scientific paper use link below. 
 
A large team of researchers affiliated with multiple institutions in China has sequenced the genomes of a large number of goldfish and carp, revealing much of their shared origin. They've published their results in the Proceedings of the National Academy of Sciences.
As the researchers note, goldfish have been domesticated by humans for over 1,000 years but unlike most other domesticated species, they have not been bred for food or companionship—instead, they serve mostly an ornamental function

Story Link: Large-scale sequencing of goldfish and carp reveals their origins (phys.org)
 
For the science minded, see the scientific paper: Global tissue transcriptomic analysis to improve genome annotation and unravel skin pigmentation in goldfish | Scientific Reports (nature.com)