It is very likely that the tails of Thai betta fish will grow when they are rotten, because most of their tails are rotten because of injury or bacterial infection, so as long as their tails are not rotten to bones, they can grow under normal circumstances. When they grow new tails, breeders need to change water in time to ensure clean water quality. They should also be sterilized regularly to avoid inflammation of rotten parts.

1. Select male fish: Thai betta fish are generally male fish with bright colors. If breeders want to enhance their ornamental value, it is recommended to select male fish for breeding. When choosing, it is best to choose a darker color, and the color will be more bright in adulthood.

2. Feeding color-enhancing feed: Thai betta fish can be fed some color-enhancing feed regularly at ordinary times, so as to keep their body color. However, color-enhanced feed is not easy to digest, so breeders need to pay attention to the amount of feeding. If conditions permit, they can be fed more shrimps, which can also make their body color more bright.

3. Get more sun: Breeders can also put containers in a place with sufficient light, and their body colors will be more vivid after being irradiated by natural light. However, attention should be paid to avoid the fierce light at noon, and the illumination time should not be too long every day, otherwise the tail may be scalded.