1. Does koi fish change color Koi fish changes color. There are many reasons for its discoloration. First, the color of juvenile fish will gradually change during its growth, which is a normal physiological phenomenon. Secondly, it is possible to eat some color-enhancing feed, which will also make its body color more vivid. In addition, environmental discomfort will cause fish to be stimulated, which will also cause discoloration. Usually, as long as the fish are in a healthy mental state, the problem of discoloration is not big.
2. How to add color to koi1. Increase light: Koi has strong ornamental value, and many breeders will keep them indoors, but if they can't receive sunlight for a long time, their body color will gradually become lighter. Therefore, it is necessary to provide them with sufficient light when raising koi fish. If the fish tank can be moved, it is recommended to transfer the fish tank to a place with sunlight. If it can't be transferred, you can install fish tank lights and turn them on for 3-5 hours every day, which can also increase the body color of koi.
2. Feeding color-enhancing feed: Koi does not produce pigment by itself, so they need to rely on acquired food to synthesize pigment. Breeders need to regularly feed them with some color-enhancing feed to help them synthesize pigments and make their body color brighter.
3. Control PH value: PH value also has a great influence on the body color of koi. If PH value is not suitable for the survival of koi, their body color will also change. Therefore, the PH value can be controlled between 7.0 and 7.2 when feeding at ordinary times.
