How do you tell koi, Tancho koi, and Green koi apart?

The Green koi is a type of variant koi, and as akoivarietymember, it is produced by mating a male koi of the Aochu line with a female Ogon koi, resulting in a German-system koi whose entire body is bright yellow-green.

The Green koi is a German-system koi and belongs to the variants derived from Aochu, so it has a series of characteristics of Aochu: a slender body shape, a slightly plump belly, and a very portly appearance. The Green koi's entire body is smooth and glossy, yellow-green in color, and scaleless, with only sparse scales covering the back, extending from the head all the way to the caudal peduncle.

At present, the Green koi is mainly distributed in Germany and adapts to temperate and cold climates. Because it is not produced in large numbers, the quantity circulating on the market is limited and it is very rare, so it is considered a precious variety.

The Green koi is very greedy, so when feeding it, seven-tenths full is enough, with small meals more often. However, although koi can eat a lot, they are relatively resistant to hunger, and generally stopping food for one to two weeks will not have much effect, so they are very easy to keep. It adapts to water with low hardness and a slightly alkaline pH.

The Green koi is a German-system koi. Although German-system koi are prone to producing variants, variant German koi easily develop uneven scales, so your Green koi may lose some of its own charm because of uneven and irregular scales.