Whether guppies shrink their tails depends on the reasons for their shrinking tails. If guppies shrink their tails under stress, they can heal themselves. Because most of their stressful tail shrinkage is caused by sudden changes in the environment or after being frightened, as long as their living environment returns to normal, the tail shrinkage will slowly recover.
If guppies shrink their tails due to poor water quality, it is generally difficult to heal themselves. Because poor water quality is easy to cause bacterial infection, if breeders can't change water or use antibiotics in time, it is difficult for them to heal themselves. In addition, when they are too old, they will also have tail contraction, which not only will not heal itself, but also can be treated.
2. Can the unfinished tail of guppish heal itselfThe unfinished tail of guppish can't heal itself depending on their unfinished tail. If the rotten tail of guppy is not serious, as long as the breeder can ensure that the water in which they live is clean and fresh, they can heal themselves. Because guppies have their own resistance and immunity, if the unfinished tail is not serious, they can be cured by their own resistance.
If the unfinished tail is serious, it can't heal itself only by relying on their own immunity. Breeders need to use drugs to treat unfinished tails in order to make them heal.