Traditional koi fish varieties are not suitable for aquariums, but for ground tanks or large water tanks. Because koi fish, a traditional species, looks down at the back of the fish. The koi fish variety suitable for modern aquarium is "Dragon and Phoenix koi fish", because its fins are long and big, swimming like a phoenix dance for nine days, full of domineering and very beautiful. But dragons and phoenixes are hard to meet, mostly fake dragons and phoenixes on tb. It is recommended to visit the local flower, bird, fish and insect market. Longfeng is originally a variety of genetic variation. At present, there are no fixed genes in many places in China. The first variation of dragon and phoenix was in Taiwan Province province, so koi fish, the dragon and phoenix in Taiwan Province province, looks very good. The appearance of dragons and phoenixes in most parts of mainland China is not particularly good, but there are some good ones. Young fish in koi fish are selected with long tail and short fins, and the opaque part at the root of each fin is often called gypsum white. Such fins have growth potential, while those completely transparent fins are basically that big. You can go to koi fish, Longfeng, see Baidu pictures, and see how beautiful Longfeng is in koi fish. If you buy from TB, it is recommended to choose the fish in the video, and choose the fish over three years old, that is, the fish over a tie. Koi fish of this size has already shown her figure, and it is a twin, but it is not a twin and has no potential. Don't listen to the boss. But this size of dragon and phoenix is more expensive, at least 200-400 yuan.