1. Adjust the environment: a ruby fish that grows in a suitable environment will naturally grow red. When breeding, if you want it to turn red quickly, you need to adjust the water temperature to about 25 C, and feed it some finished feed with red effect. When farming, water needs to be changed once a week, and one third of the water needs to be changed each time to ensure water quality.
2. Feeding astaxanthin: In addition to adjusting the breeding environment and the way of feeding, there is another way to make ruby fish turn red quickly, that is, to feed them feed containing astaxanthin. This method can make them red quickly, but it may cause some damage to the fish itself. Therefore, it is not recommended to help ruby fish turn red in this way.
1, supplement nutrition: ruby fish color darkening may be due to the lack of nutrition. If you forget to feed when you breed, or if you feed food with low nutritional value, the color of the fish may darken. At this time, you can feed them some live bait or dry fish food with high nutritional value to supplement their nutrition and help them turn red.
2. Maintain water quality: If the breeding environment is not suitable for fish growth, the water temperature is too low or there are too many impurities in the water, their color may also fade. At this time, we should clean the fish tank, change some water for the fish, and slowly raise the water temperature to 25 degrees Celsius. After a period of time, they can regain their red color.
