Fish reproduction

If you wonder if the fish has asexual reproduction, the answer is no. All fish have sexual reproduction, that is, reproduction It always occurs by the union of gametes or sex cellsand never by identical division as in asexual reproduction.

An important process that is part of reproduction is fertilization. This process is the fertilization of the ovule by the sperm, to begin the formation of the individual individual. In fish this can occur in several ways, being:

• Fertilization external: It is the most common and happens when males and females release their gametes to water so that they are. We tell you more about external fertilization: what is and animals.
• Fertilization internal: Less frequent in fish, but more efficient. It occurs when the male places his sperm inside the female, implying a much lower energy expenditure and more likely to survive the offspring.
• Fertilization oral: It occurs when the female places her eggs on the ground to fertilize, and then take them to the mouth, or also fertilization can happen directly inside her mouth, sucking eggs and sperm to fertilize them here.

Now, being such a varied group, these animals They do not have a single type of reproduction in terms of where the Embryonic fish development. There are fish that put eggs, others that are retained inside the mother, or a combination between them. Next you will know these different types of reproduction of the fish in detail.

This type of fish reproduction is the result of The formation of an eggbut it is not put abroad but The mother retains it inside her Until it is completely formed. In this case, nutrition depends on the content of the egg and vitle.

This strategy gives you advantages such as Protection against predators and a much greater birth rate than those who leave the eggs without any parental care.

This type of reproduction can be seen in the seahorses, who have an external fertilization and as the eggs are fertilized, they are introduced into the male who will incubate them.

We tell you more about the predators: what are, types and examples in the following article of Ecology Verde.

This reproduction occurs when Development happens completely within the mother. Unlike the previous case, the food depends completely on it, who will result in a completely formed fry.

This is an extremely complex type of reproduction that requires very advanced modifications in the reproductive organs to be able to transfer the sperm successfully. Only 500 species of fish of the 25 thousand that exist, They are viviparous. For example, Guppy fish (Poecilia reticulata). In addition, to a large extent, it is a type of reproduction of fresh water fish.

You may be interested in knowing other lively animals: what are, characteristics and examples.

This is The most common type of reproduction in fish. In this case there is an external fertilization, where males release their sperm and females release their ovules, until they are and fertilized to form the egg.

Fish eggs are Posts in different places according to the type of fish. Spawns can be massive and occur in private seasons of the year, this so that males and females can synchronize. The fish that live associated with the seabed place them on the sand or substrate in the area.

These eggs They do not float and are big. On the contrary, the fish of fish that live in the water column do float and are small.

We tell you more about what oviparous animals are, here.

There are fish that can have separate sexes, with male and female. These fish are called gonogoric fish.

But surprisingly too There may be hermaphrodite fishthat is, they can have both male and female reproductive organs. This can happen alternately, where it changes sex for seasons or even in hours, or simultaneous, at the same time having the two sexes.

Fish hermaphroditism forms a very low percentage, with just 2% of the total group. A good example of hermaphroditism is clownfish (Amphiprion bicinctus)whose fry males are born but can become females if necessary.

There are several species of fish that must migrate to find better conditions to complete certain basic activities. Among these is the reproduction, and the stationary fish are then distinguished, which do not migrate, and the migratory fish.

From these activities there are the following types of fish for their reproductive migratory activities:

• Catádromos: They migrate from fresh waters to the sea to complete the spawning, or put from fish eggs.
• Anádromos: They migrate from the sea to sweet waters to raise their fry until they develop.

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