Why do some fish lay so many eggs at a time?

Rather, the rate of predation on fish eggs is high because they produce such a lot of eggs. Many fish produce thousands of minute eggs, each with an infinitesimally small chance of survival because this reproductive strategy in these species results in the highest number surviving to adulthood.

Why do you think the fish lays so many eggs at a time?

Answer. fish lays thousands of eggs because some of them are eaten by big animals and some of them don’t get enough Oxygen and some more things that they can’t grow , So fish has to lay many Eggs so that so of them becomes a new one.

What is the advantage of fish laying thousands of eggs at one time?

When the eggs hatch into a large number of fry, predator fish eat hundreds of fry. The advantage of laying so many eggs in a time is that a significant number of the eggs will hatch into fry who survive to adulthood.

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Why do some fishes lay so many eggs but other fishes lay only a few?

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.

How many eggs fish lay at once?


Why do female frog fish lay hundreds of eggs?

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.

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.

What would happen if humans laid eggs?

Originally Answered: What would life be like if humans laid eggs? Incubating them would be pretty difficult. Infanticide would likely be more common, which would shift the courtship balance of power. Omelettes just wouldn’t be the same.

Is it better to lay eggs or give birth?

In nature, some mothers lay eggs, while others give birth to live young. Both methods have benefits. Laying eggs allows greater mobility for the female, which will not be encumbered by developing embryos inside her body during a prolonged period of time. … Both ways are to keep the eggs warm.

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How long does it take for fish eggs to hatch in a tank?

As for the hatching time, it mainly depends on the temperature in the aquarium or pond. Generally, it would take from a couple of days to a week. If the water is hot or you heat it once the eggs are fertilized, they may hatch in less than three days.

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 do I do if my fish has babies?

After Your Fish Gives Birth

  1. For many species, it’s important to keep fertilized eggs and newly hatched fish, or fry, separate from the adults. …
  2. When moving the fry to a separate tank, use the water from the original tank. …
  3. Some adult fish are caretakers. …
  4. Create a good home for the fry.


Do fish lay eggs from their mouth?

The female lays the eggs, after which the male fertilizes them. The male fish keeps the eggs inside its mouth until they hatch. This protects the eggs from being eaten up by sea animals.

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.

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How long do fish stay 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.

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