Best answer: How many eggs can a fish produce?

An 8-inch fish may lay only 300 eggs, while the nest of a 12-inch nest may contain 1,000 eggs!

How many eggs can a fish lay at once?

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In which month fish lay eggs?

Most of these fishes produce a very large number of eggs that are left uncared for. The Atlantic Salmon (Salmo salar) spawns during November and December. They ascend the rivers during the breeding season and on entering the fresh water give up feeding and lose weight.

Why do fish lay so many eggs at one 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.

Do bigger fish produce more eggs?

May 11, 2018. Large female fish produce disproportionately more eggs than smaller mothers of the same species do, according to a study published today (May 11) in Science. … Bigger fish produce “massively more offspring and larger offspring than smaller fish,” study coauthor Dustin Marshall of Monash University tells NPR …

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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.

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.

How long are fish pregnant for?

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.

Do fishes get pregnant?

In most cases, the female drops eggs in the water which are immediately fertilized by sperm from the male. Another way is for fertilization to occur within the females body before she drops them into the water. With the third and final method, the female retains the eggs within her body and the young are born alive.

Which Colour fish is good for home?

They are considered to be the most sacred and prosperity bringing fishes of all. The fish looks like gold and is said to add a glow of gold in your life as well. You can place a goldfish in a small aquarium in the east or north direction of the drawing-room of your house.

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What animal produces the largest egg?

The largest recorded egg is from a whale shark and was 30 cm × 14 cm × 9 cm (11.8 in × 5.5 in × 3.5 in) in size. Whale shark eggs typically hatch within the mother.

Why do fish produce more offspring?

The Bigger The Mother Fish, The More Babies She Has : The Salt Plus-sized mama fish have a size advantage over their petite counterparts: They can produce more eggs, and those eggs produce larger fish. It’s a reminder that protecting big fish matters.

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 fish has the most eggs?

Selina Heppell, head of the Department of Fisheries and Wildlife at Oregon State University, says other fish known to have high numbers of eggs include sturgeon (up to 2.5 million eggs for Atlantic sturgeon) and large tuna (bluefin tuna can produce 10 million eggs a year).

How many species of fish are there in the whole world?

The exact number of fish species worldwide is unknown, as it is believed that some species have not yet been discovered. However, scientists estimate that the total number of fish species in the world is approximately 33,600.

What is the function of the swim bladder?

The swim bladder is a gas-filled organ in the dorsal coelomic cavity of fish. Its primary function is maintaining buoyancy, but it is also involved in respiration, sound production, and possibly perception of pressure fluctuations (including sound).

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