A 10 cm ray can grow about 1-2 cm in a month, and its body size is relatively large in adulthood, and its growth speed is relatively fast. As long as they live in a comfortable and stable environment and feed enough food, they can basically grow about 2 cm a month. If they live in a poor environment and are not fed enough food, their growth rate will slow down, and they may only grow by 1 cm a month, and some may not even reach 1 cm. About 10 cm rays are the golden stage of normal development. If breeders want them to grow faster, they must ensure that their living environment is comfortable.

What rays like most is animal feed. When they are in the wild, they mainly focus on shellfish, crustaceans and plankton. If you want to improve their growth speed in artificial breeding, you can feed them more foods with high protein and fat content. For example, Zhu Wenjin, loach, shrimp, red worm and so on. Zhu Wenjin, in particular, is of great help to the growth and development of rays, and can also make their body color more bright. However, Zhu Wenjin is easy to carry viruses and needs to be sterilized in advance before feeding. When feeding loach, the mucus on the body surface should also be cleaned up. Fresh loach can be kept in clear water for about 3 days, so that they can excrete the waste in their bodies.