1, look at the color: To choose three-color koi, you must first choose the color. Although it has three colors, there is always a background color. Usually, koi with pure white as the background color is the best choice, and it also has some thick erythema. If there are markings on the head, you can't go to the position of eyes and nose, and the tail is preferably white.

2, look at the back: Koi is a fish that looks at the back, so the quality of the back is particularly critical. Usually, we should choose those with uniform back patterns, preferably with black spots on the shoulders, and don't have too many black spots on the second half of the body. There can be two or three black stripes on the pectoral fins, which is ideal for such fish.

3, look at the state: In addition to the appearance, the selection of three-color koi depends on its mental state. If you buy a sick fish, you may die soon after you go back, so you must choose a healthy one, which is more lively in spirit, and all the fins should be opened. Don't choose to lie prone and turn over your belly. This kind of fish often has problems.

Three-color koi is large in size, so it needs to prepare a large fish tank to ensure its better growth. Secondly, it is necessary to ensure the comfort of the surrounding environment, control the water temperature between 18-24 ℃, and keep the water quality clean. Then there is feeding. Koi carp has a miscellaneous diet, so it can be fed with animal feed and live bait, which can balance nutrition. Finally, there is illumination. If you want it to be bright, you must provide enough sunshine, preferably 2 hours a day.