I have apond in my back yard and I put some Koi in it. That's just a group of colored variants of the Amur carp. It's nice. 
Koi fish are beautiful, where did you get them?
A local pet place. I like how the varieites are differintiated by coloration, pattern and scalation,
Oh I see, what kind of patterns and colors do they normally have?
Some majors ones are white, black ,red, yellow , blue and cream. 
Ooo, I'd love to see a black koi fish. Where do they originate from?
Not sure. But Carp are originally found in Central Europe and Asia.
Ah yes that's what I was asking. I was thinking they were asian, but I had no idea they also came from euorope
group of fish originally found in Central Europe and Asia. Various carp species were originally domesticated in East Asia, where they were used as food fish. Carp are coldwater fish, and their ability to survive and adapt to many climates and water conditions allowed the domesticated species to be propagated to many new locations, including Japan. Natural color mutations of these carp would have occurred across all populations. Carp were first bred for color mutations in China more than a thousand years ago, where selective breeding of the Prussian carp ("
Koi
Koi is an informal group of the colored variants of "C. carpio". Several varieties are recognized by the Japanese. Koi varieties are distinguished by coloration, patterning, and scalation. Some of the major colors are white, black, red, orange, yellow, blue, and cream. The most popular category of koi is the "Gosanke", which is made up of the "Kohaku", "Taisho Sanshoku", and "Showa Sanshoku" varieties.
History.
Carp are a large