1. Trauma: Guppy tail rot may be caused by untimely treatment after trauma, such as fighting during mating, or being scratched by decorations or aquatic plants in fish tanks. There is a wound on the fish tail. If it is not treated in time, it will be invaded by bacteria, resulting in unfinished tail.

2, poor water quality: guppy tail rot may also be caused by poor water quality, which does not require high environment, but poor water quality will also cause their tail rot. In the early stage of unfinished tail disease, the tail will not fester, but only redness and congestion. If not treated in time, inflammation and fracture will occur.

If guppy tail rot is not very serious, the treatment is relatively simple. Breeders need to change water first to ensure the clean water quality in the fish tank. Secondly, it is necessary to prepare a separate container, add a proper amount of yellow powder, and then put the sick fish into a medicated bath. Finally, after the sick fish medicated bath, rinse it with clear water and put it back into the original tank.

If the situation of guppy tail rot is serious, besides adding yellow powder, some oxytetracycline or potassium permanganate should be added to the water of the breeder's medicated bath. Then give the sick fish a medicated bath, which lasts for 15 minutes every day and lasts for one week, and the unfinished tail will be greatly alleviated. During the treatment, breeders need to stop feeding and ensure that they have enough oxygen to live.