The fetal spot of female guppish is triangular in shape, and some are irregular in shape, but it is not common. The fetal spot of guppy mother fish is near the connection between tail and body, and its color is mostly brown or black. Near production, the color and shape of tire spots will be obvious. But there are also some special guppies, such as albino guppies, whose fetal spots are orange or red.
The fetal spot of guppy female fish produced for the first time is not obvious, but only when it is about to be produced. However, female guppies, which have reproduced several times, will have fetal spots when they are just pregnant.
2. How long will guppies produce after they have fetal spotsThe production time of guppies cannot be determined only by fetal spots, but breeders can judge the approximate time according to the color of fetal spots. If the color of fetal spots is not deep, it means that they have not been pregnant for a long time. If the color of tire spots is darker, and even some have turned black, it means that they are about to be produced.
The pregnancy cycle of guppies is 28-32 days, but there are also some guppies with rapid development, which can start giving birth in about 21 days. Breeders can comprehensively judge according to the color of their fetal spots and the mating time, so as to obtain the accurate breeding time of guppies.