Why do fish lay thousands of eggs?

Why do fish lay thousands of eggs?

Animals like frogs and fish lay hundreds of eggs and release millions of sperms. But the entire eggs do not get fertilized and develop into new individuals. Thus, production of large number of eggs and sperms is necessary to ensure fertilization of at least a few of them.

Where do the fish lay their eggs and why?

The methods of reproduction in fishes are varied, but most fishes lay a large number of small eggs, fertilized and scattered outside of the body. The eggs of pelagic fishes usually remain suspended in the open water. Many shore and freshwater fishes lay eggs on the bottom or among plants.

How many eggs does fish lay at a time?

Siamese fighting fish: 100 – 500
Common carp: 300,000
Fish/Clutch size

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

Fish breed in a number of ways. Most fish release thousands of eggs, scattering them in the water where the male fish fertilize them. This improves the chances of the babies surviving, so fewer eggs are laid. A few kinds of fish keep their eggs inside their bodies, so when they hatch they give birth to live young.

Why do you think it is necessary for frogs and fishes to lay so many eggs Class 8?

Answer: Yes, it is necessary for frogs and fishes to lay large number of eggs because they are exposed to the external environment that may destroy many eggs. Hence, laying eggs in a large number promote fertilisation and also increase the chances of survival of at least few of the fertilised eggs.

Why do fish lay so many eggs for kids?

Fish and Amphibian Reproduction: 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.

What do I do if my fish lays eggs?

After Your Fish Gives Birth For many species, it’s important to keep fertilized eggs and newly hatched fish, or fry, separate from the adults. Some fish eat their own young while others eat the young of other species. Keeping the fish eggs and fry separate from the adult fish may give them a better chance of survival.

Do male fish lay eggs?

Most fish, including trout and salmon, lay unfertilized eggs. The eggs are fertilized externally by the male. Fish typically release hundred or even millions of eggs, which increases the chance that a few offspring will survive into adulthood.

Why do frogs lay many eggs?

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 .

What kind of eggs do most fish lay?

The eggs of fish and amphibians are jellylike . Cartilaginous fish (sharks, skates, rays, chimaeras) eggs are fertilized internally and exhibit a wide variety of both internal and external embryonic development. Most fish species spawn eggs that are fertilized externally, typically with the male inseminating the eggs after the female lays them.

What fish doesn’t lay eggs?

Hi Ciera, If they are white, they are most likely not viable. Out of the fish you’ve named here, Platies and Mollies are livebearers and don’t lay eggs, Gouramis build bubble nests at the surface of the water, and Sharks , Catfish and Tetras are usually egg-scatterers and wouldn’t lay clumps of eggs.

Do fish lay eggs or give live birth?

Fish that give birth to live young are actually ovoviparous- meaning that the eggs are hatched inside their bodies. Some examples of ‘live- bearing’ fish are guppies, mollies, swordtails, halfbeaks and platies.

Do fish have babies or eggs?

The eggs develop and hatch into larvae (baby fish) without any help from the parents. Most larvae are eaten by other creatures, but a few survive to become adults. Some fish, such as the bullhead, look after their eggs or young. This improves the chances of the babies surviving, so fewer eggs are laid.