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In some species there is external fertilization. In other species there is live birth. Live birth requires internal fertilization.

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15y ago

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How do tropical fish reproduce?

In order to reproduce? Yes, but mating can entail many things, and in fish is generally manifested by external fertilization of egss.


When fish have babies do they have a cord at the end?

Fish have a reproductive process that involves external fertilization, not live birth like mammals. When fish lay eggs, they are typically fertilized externally by the male fish releasing sperm over the eggs. There is no umbilical cord involved in the development of fish embryos.


Where do most animals that have external fertilization live?

They are aquatic.


Why fish use external fertilisation?

Fish use outer fertilization because they are not Mammals , which use inner fertilization . Mammals generally bear live young , with few exeptions . Fish and other cold blooded animals lay eggs which are fertilized outside the body , again with few exeptions .


Is a monkeys fertilization internal or external?

Internal because they give birth and not lay eggs. If they lay eggs, they would be like a chicken. ~Savannah B.


Why do women have eggs but give live birth?

all animals have eggs, but it depends their fertilization development type (which is either internal or external). Humans are mammals, and all mammals give live birth unless it is a monotreme, which lays eggs.


What are the different stages of pregnancy in platy fish?

The different stages of pregnancy in platy fish are fertilization, gestation, and birth. During fertilization, the female platy fish's eggs are fertilized by the male's sperm. The gestation period lasts about 4-6 weeks, during which the female carries the developing embryos in her body. Finally, the female gives birth to live young, known as fry.


What would be an example of internal fertilization?

Sharks give birth to live young because of internal fertilization.


How does a fish reproduce?

Many fish reproduce sexually. The male fish will insert a part of his body into the female fish in order to fertilize her eggs. In some cases, the male fish will spread semen on the eggs after they leave the body of the female.


Do seahorses have eggs or live birth?

it depends on the type of fish fish like sharks give birth to live young and fish like clown fish lay eggs


What kidnd of fish have live birth?

Tropical fish.


What two classes of vertebrate use external fertilization?

Two classes:Fish and Reptileswhat is interior and exterior fertilization?Internal fertilization is when the sperm is directly deposited into the female, who produces eggs and fertilizes them in her body. External fertilization is when the sperm and eggs are released outside of the body and meet outside of the body, not like how chithra described. Birds do not have external fertilization, the fertilization still occurs in the body, they just do not produce live young.Examples of external fertilization are in plants like moss or algae, where the sperm and eggs meet outside of the parent's body and produce a zygote, which then grows into a mature plant. External fertilization in animals are usually in marine organisms, like sponges, because the sperm needs to swim in water to meet the egg.-Your Welcome