Why are guppies viviparous and not oviparous? Urgent!!!!!!!!!!!!!!!!!!!

Natural selection, survival of the fittest!

Guppy ovoviviparity refers to a reproductive form in which an animal's eggs are fertilized and developed in vivo. Although the fertilized egg develops into a new individual in the mother's body, the relationship between the embryo body and the mother's structure and physiological functions is not close. The nutrients required for embryonic development mainly depend on the absorption of the yolk of the egg itself, and the embryonic body can also exchange some substances with the mother's fallopian tubes.

This is a reproductive mode formed by the long-term adaptation of animals to the adverse environment, and the actual mother mainly plays a protective and incubating role in the embryo.

I laughed! It is a fish of the Americas, and it is not a large fish, of course, it is oviparous. Viviparity should match the characteristics of mammals, or large fish.

I laughed! It is a fish of the Americas, and it is not a large fish, of course, it is oviparous. Viviparous to be consistent with the characteristics of mammals, or large fish.

I laughed! It is a fish of the Americas, and it is not a large fish, of course, it is oviparous. Viviparous to be consistent with the characteristics of mammals, or large fish.

I laughed! It is a fish of the Americas, and it is not a large fish, of course, it is oviparous. Viviparous to be consistent with the characteristics of mammals, or large fish.

Because guppies are fertilized in vivo, they are viviparous.

Well, let's ask that question.

Because they are so short-lived, to compensate for this, they become a breed with strong reproductive ability and a high survival rate of seedlings to prevent genocide.

1.Ovoviviparous guppies belong to the class of ovoviviparous fish.

2.The fertilized egg is the mother's place, but it will not absorb nutrients through the mother, but like an oviparous animal, it maintains nutrients through the yolk sac in the zygote.

3.The fertilized egg itself is searched and the mother does not engage in material exchange activities.

4.The production of this fish in one litter is small, about 30 pieces, and the production of the second litter begins to increase, 80-120 pieces each time.

5.If the mother fish is large, then the number of its production increases.

<> guppies are not viviparous, but ovoviviparous. Although the two look similar, there are certain differences. Viviparity continues to receive nutrients from the mother, while ovoviviparity does not absorb nutrients after becoming a fertilized egg, and relies entirely on its own energy to develop into a larvae.

This type of fish is usually fertilized in vivo, and the fertilized eggs enter the mother's body and slowly hatch into larvae, which are then produced by the broodstock.

Guppies belong to the class of ovoviviparous fish. The zygote develops in the mother's body, but it will not absorb nutrients through the mother, but will maintain nutrients through the yolk sac in the zygote like an oviparous animal. The fertilized egg itself and the mother do not engage in material exchange activities.

The production of this fish in one litter is small, about 30 pieces, and the second litter begins to increase in production, 80-120 pieces each time. If the mother fish is large, then the number of its production increases.

This fish is an ornamental fish of medaka fish. This fish gives birth to juveniles, not eggs, so it is not oviparous. However, it is also different from viviparous mammals.

The difference is that the zygote of ovoviviparity develops in the mother's place, but it does not absorb nutrients through the mother, but is like an oviparous animal, through the yolk sac in the fertilized egg to maintain the nutrients, and the mother does not exchange material activities. Therefore, the mode of reproduction of this fish is between viviparous and oviparous and belongs to ovoviviparity. This is a form of reproduction formed by the long-term habit of the fish to the living environment, and the mother can play a protective role in the embryo.

Guppies basically give birth to small fish once a month, and under normal circumstances, the number of small fish produced in one litter is the smallest, only about 30 small fish. The production of the second litter has increased significantly, and it is able to give birth to 80-120 children. If the mother fish is large and absorbs a lot of nutrients, then the number of its production will increase.

This fish is produced many times in a year, and it is known as "million fish". However, during the breeding period, it is necessary to pay attention to the fact that it is best not to exceed 3 generations of littermates, otherwise it will continue to be inbreeding, which will degrade the species and affect the quantity and quality of reproduction.

is ovoviviparous; A litter produces more than 50 100 larvae, which is a very large amount in a year.

Guppies are ovoviviparous and are relatively large guppies, so one litter can produce 100 200 small fish larvae, and if it is relatively small, it can rise about 20 50 at a time.

It is an ovoviviparous animal, and under normal circumstances, a litter can give birth to 100 200 small fish.