1. Reason: The reason why Thai betta fish don't spread their tails may be because the water temperature is too low. They are tropical fish and like higher water temperature. If the water temperature is too low, the amount of activity will also decrease, and the situation of tail exhibition will naturally decrease.

2. Solution: Breeders need to raise the water temperature to 24 ℃. If conditions permit, they can install heating rods to keep the water temperature in this range all the time.

1. Reason: Thai betta fish do not show their tails may also be due to poor water quality, although they can live in a wide range of water quality. However, if the water quality is too acidic or too alkaline, it will also affect their state.

2. Treatment: Breeders need to change water in time, but they cannot change all the water at one time. If conditions permit, a circulating filtration system can be installed to slow down the deterioration of water quality.

1. Reason: Thai betta fish may be sick if they don't show their tails, such as common rotten tails, rotten fins, parasites, water mold, etc., which will lead to their decreased activity and listlessness. Thai betta fish will only show its tail in a comfortable state, and it will not show its tail after getting sick.

2. Treatment methods: Breeders need symptomatic treatment according to their performance, and different diseases have different treatment methods.

1. Reason: Thai betta fish may not show their tails because of lack of stimulation. When they are attacked or encounter invaders, they will also show their tails.

2. Treatment: Breeders can put a mirror in the fish tank, which can arouse their fighting spirit and cause more tail exhibition.