The word “koi” comes from the Japanese language, and it translates directly to carp. These koi fish are very interesting because they do not share a single origin. China was the first ancient country to breed these koi fish, and that is why they all have different colors and patterns.
Koi fish have a wide variety of colors. The colors range from red, white, black, blue, yellow, to cream. They look like an oversized goldfish and technically speaking, they are. Since koi fish came about from breeding different carp, goldfish was another type of fish that came with the cross-breeding.
I loved seeing the koi fish because I have only seen them in a few places in the United States. The ponds that I saw them in were controlled and the fish were used for decorative purposes only. Seeing them in the wild for the first time was really cool.
Koi are cold-water fish that thrive in most freshwater environments. The can survive all over the world given the right conditions.