The red crucian carp, also known as the golden carp or grass goldfish, is similar in appearance to the Japanese koi, which is a variety of red and yellow crucian carp formed by mutation in captivity, and is one of the oldest varieties of goldfish. Its colors are fiery red, red and white. Due to the red crucian carp feeding conditions are simple, inexpensive to feed, omnivorous, fast-growing, so it can be used for beginners for self-training in breeding techniques, so he is a very popular species it is mainly distributed in Asia, and the ability to survive.