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It's a survival thing. Many eggs are eaten before they have a chance to hatch. Many are eaten shortly after hatching. The chances are that 9 of 10 won't make it the first week, then even if they do, their chances of survival diminish quickly.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoThis is because fish, (such as salmon) are less likely to survive in the water, and only a small percentage of the eggs make it to adulthood. So, in order to keep their race from going extinct, fish lay more eggs.
Also, humans don't lay eggs. They are mammals. %3Pr
Wiki User
∙ 11y agoBecause fish eggs are less likely to become fertilised. This is because the female fish will release her eggs into the water, and then the male fish ejaculates over the top of the eggs, so not all will become fertilised. Also the survival rate for fish is not as high as humans as the fish have predators, for this reason they will hatch out more young in order for more to survive
Wiki User
∙ 13y agoBecause there is less chance of the sperm and eggs connecting under water so they put a lot out so there is a higher number of eggs that are actually fertilized.
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Which fish produces more eggs broadcast spawner or egg guarder?
A broadcast spawner would produce many smaller eggs and an egg guarder would produce fewer but larger eggs. Thus the broadcast spawner produces more eggs.
Who have more fertilized eggs frogs eggs or fish's eggs?
Fish
Why do fish release more eggs than mammals?
First of all there are only two mammals in the world that lay eggs: the Platypus and the echidna. The size ratio from the size of a fish to the size of their eggs is much bigger then either of these two mammals. So looking strictly at the amount of eggs that these animals can have, the fish has the advantage. Also, Both of these mammals don't have many predators because of their advance defenses. A platypus has spurs on its ankles that can deliver a deadly toxin and the echidna is a glorified porcupine! So, they don't necessarily need to reproduce quickly. Whereas a fish has an infinite number of predators and they rely on their ability to replenish their population to prevent extinction.
Are fish more closely related to mammals or fish and why?
no
How many eggs do mammals lay at one time?
Platypuses and echidnas are the only mammals that lay eggs. These mammals belong to the group of mammals known as monotremes. Platypuses and echidnas lay eggs just once a year. The platypus lays 1-2 eggs, while the echidna lays a single egg each year.
Is a reptile more of the fish or a mammal species?
Reptiles are neither mammals nor fish. Taxonomically, they are more closely related to mammals.
Why does a female herring lay many eggs?
Do you mean "Why do fish lay so many eggs at one time? The reason fish lay so many eggs at one time is survival. The more eggs that a female lays the better chance more eggs will have a chance to survive.
Why do governments set fishing quotas?
If there is a decline of some fish population government proclaims fishing quotas for that species. So there is less fishing, fish can lay more eggs and produce offspring. And hopefully in next generation produce more fish.
Why must reptile and birds use internal fertilization?
Because they only can produce little offspring, unlike fish who produce millions of eggs and fertilize them afterward. Also, reptile and bird egg shells are tough making it hard to fertilize when fish eggs are more like jelly.
Why do fish have high number of offspring?
because fish eggs are so small, fish can fit more eggs in the womb.
Are reptiles more close to mammals or fishes?
Fish
Are you more likely to find frog eggs in a pond with lots of fish or a pond with very few fish?
One is more likely to find lots of frog eggs in a pond with a small amount of fish because frog eggs tend to be eaten by fish sometimes. So less fish equals more eggs that survive.
