The goldfish is a freshwater fish in the family Cyprinidae. It was one of the earliest fish to be domesticated, and is one of the most commonly kept aquarium fish.The Common Goldfish are hardy fish, they are colorful, inexpensive, and readily available. These fish are a favorite pet for a multitude of keepers because they can be quite personable and are delightful to watch.
The Common Goldfish is a small member of the Cyprinidae family of carp fish. The popular Koi fish commonly kept in ponds is also a member of the carp family. The C. gibelio was normally a silver or gray color but early in the Jin Dynasty, it was noted that there was a natural genetic mutation producing a yellowish orange color.
It became common practice to breed this pretty golden fish, and over time a large variety of breeds of varying shapes and sizes have been developed. Other natural mutations are red and yellow. Today they are available in various solid colors and combinations of white, yellow, orange, red, brown, and black.