guppy species are more, their body color is different. This means that the color of the fetal spots they appear at birth is different. The color of most guppies is black, and the closer they are to production, the darker they are. There are exceptions, such as the albino species of guppies. The fetal spots that appear when it is born are not black, but red or orange.
After pregnancy, the guppy will form fetal spots at the junction of its abdomen and tail, and gradually become obvious over time. However, not all females will form fetal spots as soon as they are pregnant. Like the guppy for the first time, it will not grow fetal spots when it is pregnant. Only near the time of birth, there will be obvious fetal spots. The female fish that has been bred will appear fetal spots in the early stage of pregnancy, and then become more and more obvious.
Generally speaking, the pregnancy cycle of guppies is about 30 days. Some fish develop faster and can be born in about three weeks. If the fetal spot on the mother's abdomen is obvious, it will be able to produce small fish after 3 to 5 days.
