You look at the fish and see what color it is, if you're still not sure then... ask someone hope this was helpful :D
The color of a koi fish relates to the family that they belong to. The blue koi fish is known as the asagi, the ogon is gold or orange, and bekko are white, yellow, and red.
The color black in a koi fish means the father, good luck, success, perseverance, determination, honor.
No they do not change colour if they eat golden coloured fish. I also wonder why on earth anyone would consider feeding live fish to Koi carp.
Koi fish Koi fish
In Chinese culture, koi fish are a symbol of success and wealth.Koi fish are actually more of a symbol in Japanese culture, however. They can mean several different things:independent mindedstrong willed and stubbornsurpassing of expectationsvictorious deeds
Koi fish can live in almost any country. Koi are thought to be originally from Japan. Many people have outdoor fish ponds in which Koi are the dominant fish.
My koi pond is black, with stone sides. . .to me this makes the fish very visible I would google image "koi pond" to get a better idea. At koi shows they are displayed in blue tubs. Web sites that have koi for sale show all their koi on blue backgrounds. Some koi have black in them and some are completely black. With a black background the black fish disappears. (www.rosepond.com)
a fish, a koi carp
Koi is the fancy name for ornamental carp. Carp in the wild are usually dark and a dull color. Koi, a type of carp have been bred like guppies or gold fish to make them more desirable. So Koi's special use would be to make the fish in a pond visible and beautiful.
because it is fish
Koi are a type of specially bred carp.
Nope they sometimes eat there eggs