Fish how do they reproduce sexually?

In sex, two individuals of the same species combine their gametes to form a single zygote. In most animal species, the male carries the sperm and the female carries the egg. In some species, the male and the female each contribute half of the gametes. For example, in humans, both males and females produce half of the sperm, while the female contributes an egg. In fish, the male carries the sperm that fertilizes the egg.

How do fish reproduce sexually?

In most species, the male fish fertilizes the eggs with his sperm. But in a few species where the male's sperm is too small, the female lays unfertilized eggs. This is known as parthenogenesis, and it occurs in species like the Amazonian river fish Pimelodus maculatus and the African sharptooth catfish.

How do fish reproduce sexually without males?

In the animal kingdom, sexual reproduction is often dependent on the presence of a male to fertilize the eggs. However, some species of fish do not use males at all for reproduction. Instead, these species use a type of sex known as parthenogenesis. Parthenogenesis is when an unfertilized egg is produced. The developing embryo is genetically identical to its mother.

How do fish reproduce sexually without the male role?

Some species of fish can form part of a species where all the females are fertile and all the males are infertile. These species are called hermaphrodites. Hermaphrodites have both male and female reproductive organs, and they can reproduce by either self-fertilization or sexual reproduction with another member of their species.

How do fish reproduce sexually without the male?

Even though it’s rare, some species of fish have a female-only sexual reproduction. In these species, the female passes her eggs through her cloaca – the same body part she uses to expel waste. The male in species with female only sex never has anything to do with reproduction. This is because the eggs are already fertilized inside the female before they even reach his genitals!