Introduction of Koi Fish culture and its economic value

Koi is one of the ornamental fish that lives in freshwater streams, lakes and lagoons. Geographical evolutionists believe that its origins from central Asia and Iran. The Koi Fish are benthivore. It was famous in the name of Magoi in the Old Persian Empire. The Japan and China have imported this fish from Persian Empire and started to cultivate them many years ago. The red and white koi fish are very popular. Propagation in many diversities of this fish in different colors is very popular in the rest World.   Koi culture shows success in hatching rate in industrial methods. Producing fish larvae are very important in these industrial methods.  Koi farmers prefer traditional methods due to existence of many stress factors in Koi intensive industrial culture. Non intensive and semi-intensive methods are very popular among the Koi fish farmers.