1. The water quality is too poor 1. Reason: Guppies may shrink their tails and fins because of poor water quality. Although they can live in poor water, poor water quality is easy to breed bacteria, which leads to shrinking their tails and fins.
2. Solution: Breeders need to change water as soon as possible to ensure clean water quality. If conditions permit, it is best to disinfect the fish tank with yellow powder or potassium permanganate. After disinfection is successful, put guppy back for breeding.
2. Sudden change of water temperature1. Reason: It is also possible that guppies shrink their tails and fins because of the great change of water temperature, which leads to their stimulation, and they are sensitive to environmental changes. When the water temperature suddenly changes, it will stimulate them and make them produce stress response.
2. Solution: The breeder needs to control the water temperature between 26-28 ℃ immediately. If conditions permit, it is best to install a heating rod to keep the water temperature in a stable range.
3. Needle tail disease1. Reason: It is also possible that guppy has needle tail disease when it shrinks its tail and fins, and the cause of this disease is bacterial infection. Needle tail disease is very easy to occur in guppies at an early age.
2. Solution: Breeders should first fish out sick guppies and isolate them, so as to prevent them from infecting other fish. Secondly, it is necessary to disinfect the fish tank where guppy originally lived. Finally, use potassium permanganate solution to give sick fish a medicinal bath to speed up their recovery.
