First, the gluteal fin becomes square
Peacock fish, if you look carefully, you will find that there is a fin in her anus. Generally speaking, the male fish is pointed, while the female fish is round, which has no symptoms before pregnancy, but if the female fish is about to give birth to a small fish, then this position is no longer round, but it becomes a smoother one, but it is obviously square.
Second, tire spot discoloration
Peacock fish will have fetal spots after pregnancy, and this is generally under his abdomen, and sometimes there will be a piece at the position of his caudal fin. Generally speaking, after his abdomen keeps getting bigger, this piece is transparent at first, but when a small fish is born soon, it will change color and may turn black, and if it is Bai Zi's, it will turn orange.
Third, abnormal behavior
When guppy was pregnant, she didn't have any abnormal behavior, but when she was about to give birth, she would behave completely differently from before. Generally speaking, there are two kinds of behaviors, some of which may be particularly irritable, so she began to jump up and down and be quiet. She chose to avoid other fish and hide quietly in a corner.
So if you keep guppies and want to see when they will be born before you get pregnant and give birth to small fish, you can observe these symptoms, and if they appear, they will be born soon.
That is, the belly is bigger, which is an obvious feature, and you should know that the date of its last birth is easier to distinguish, because it is about a litter every month, and it should be isolated in the third week. There are also some special circumstances that may not last for one month (for example, the production was incomplete in the previous month, and some will be reproduced halfway), so it depends on other aspects. The normal genital hole is circular, and it will be square when it is in production. If this shape is basically fished out, it will be quiet for a while and will be born.