By observing the color of its buttocks, we can judge the time of giving birth to small fish. Only an approximate time can be inferred. And a fish's ass turning black just means it's pregnant. As the pregnancy grows, its black will also deepen, as to what extent it can deepen, it is difficult to determine. Usually, it takes about 22 to 28 days from the beginning of blackening on its buttocks to the production of small fish. If the development of small fish is faster, this time will be shortened. When the black color is very obvious, it indicates that small fish are about to be born. If there is no interference from external factors, it can give birth to small fish in about 1 to 2 days.
Because guppies have the habit of swallowing the baby fish, the newborn baby fish should be isolated from the parent fish. Because they are born as small fry and are so small that they are easily eaten as food. The guppy has no ability to distinguish its offspring, so it is the parent fish that is most likely to eat them.
Generally speaking, the mother fish will eat them after the production is over, and rarely eat them raw. Therefore, after the mother fish production is over, the parent fish and the small fish should be isolated immediately, so as to ensure that the small fish will not be eaten.
