Animals like frogs and fish lay hundreds of eggs and release millions of sperms. … This is because the eggs and sperms get exposed to water movement, wind and rainfall. Also, there are other animals in the pond which may feed on eggs.
Why do fish produce more eggs than mammals?
Fish and amphibians will typically produce more eggs while reproducing than mammals and reptiles. This is due, in part, to the method of egg fertilization during which amphibians and fish fertilize the eggs externally, while mammals and reptiles fertilize eggs internally.
Why do some animals lay thousands of eggs at a time?
Originally Answered: Why do some animals lay eggs in large numbers? Because they know that they have many predators that would eat a lot of the eggs. So they produce so much eggs that eventually a sufficient number to keep the species alive will survive.
How many eggs are laid by fish?
Why do fish and frog produce more number of eggs?
The type of fertilization in fish and frog is external fertilization i.e fertilization takes place outside the body. … Thus the fish and frog produce a huge number of eggs each year to overcome the chance factor(sperm to come in contact with egg) and produce offsprings.
Which fish does not lay eggs?
Among aquarium fish, livebearers are nearly all members of the family Poeciliidae and include guppies, mollies, platies and swordtails. The advantages of livebearing to the aquarist are that the newborn juvenile fish are larger than newly-hatched fry, have a lower chance of mortality and are easier to care for.
What is a female fish called?
What is a female fish called? A female fish does not have a specific name, male and female fish are both just called fish. However, around 500 species of fish are able to change their gender during their later life after birth. A species of fish that can change its gender is called a hermaphrodite.
What animal can lay the most eggs?
Insects are no slouches when it comes to reproduction and the African driver ant, which can produce 3 to 4 million eggs every 25 days, is thought to be the most generous of all.
Which is the largest egg in the world?
The largest egg is usually laid by Ostrich. Called the elephant egg. There is also a world record of the largest egg. The largest egg on record weighed 2.589 kg (5 lb 11.36 oz) and was laid by an ostrich (Struthio camelus) at a farm owned by Kerstin and Gunnar Sahlin (Sweden) in Borlänge, Sweden, on 17 May 2008.
Which bird gives birth to babies not egg?
The peacock is a bird that does not lay eggs.
How long is a fish pregnant?
As examples, the female swordtail and guppy will both give birth to anywhere from 20 to 100 live young after a gestation period of four to six weeks, and mollies will produce a brood of 20 to 60 live young after a gestation of six to 10 weeks.
Are fish born with all their eggs?
Most fish release thousands of eggs, scattering them in the water where the male fish fertilize them. … A few kinds of fish keep their eggs inside their bodies, so when they hatch they give birth to live young.
Does fish give birth through mouth?
Sometimes the female fish will carry the fertilized eggs in her mouth, or the male and female will trade off, which is called biparental mouthbrooding. Typically fish that are born via mouthbrooding are underweight at first and require recovery time to feed and grow.
Why does frog lay so many eggs at a time?
Answer. Frogs laid so many eggs in water to make sure that enough eggs reach to the morality & adulthood . because they are lowers in food chain & also have so may enemies in water & on land also . So to ensure for new generation they laid high number of eggs .
Why do humans not give birth to as many babies as frogs do?
frogs reproduces more because there is one father but the number of mothers are more because there could be any number of females that can be fertilized whereas in humans internal fertilization takes place so the sperm can only fertilize one egg.
Why do fish frog lay more number of eggs where as cow and Humanbeings usually give birth to only one at a time?
why do fish and frog lay more number of eggs where as cow and human biengs usually give birth to only one at a time. … So, their large numbers enables adequate number of eggs to get fertilized even if some eggs are destroyed. In case of humans and others, the process of fertilization occurs inside the body.