Do male or female fish protect eggs?

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.

Do fish take care of their eggs?

All species lay and take care of their eggs in a different way. Some species of fish lay eggs under a hollowed-out rock or hide them in a cave. … They also fertilize the eggs in their mouths. Sometimes, they wait for the eggs to hatch in a pit and then take the fry in their mouth to protect them.

Why do male fish fertilize eggs?

Nesting males produce less sperm than sneaker males, but their sperm is generally faster. Thus, the ovarian fluid gives them an advantage in the “race” to fertilize the egg.

Do female fish eat their own eggs?

Once the female of the Common Goby (Pomatoschistus microps) has laid the eggs, only the male looks after them. … Yet scientists have repeatedly observed males eating some of the carefully-provided for eggs. Filial cannibalism often occurs in fish species in which males care for the eggs or young.

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Do male fish fertilize eggs?

Most fish species spawn eggs that are fertilized externally, typically with the male inseminating the eggs after the female lays them. These eggs do not have a shell and would dry out in the air.

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.

What do fish look like when they are mating?

Signs that your goldfish are ready to mate include white spots along the gills of the males, and the female will become fatter and more rounded. The male will then chase the female around the tank to encourage her to release her eggs.

How did fish 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.

Why did my fish eat her eggs?

Sometimes, fish eat their own eggs to compensate for their own lack of food and energy. While angelfish do remove some eggs during the process of cleaning and caring for them, some angelfish may eat all eggs as a response to certain stress factors.

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Why do aquarium fish eat their babies?

According to some, filial cannibalism is a result of a spill-over response prompted by stress factors, which enhances the self-preservation instinct of fish. However, this isn’t a satisfactory explanation because the same behavior can also be observed in fish that aren’t kept in stressful conditions.

Why do molly fish eat their babies?

And they are prolific breeders as well. Molly babies get no protection from their parents. The tiny fish are just as likely to be eaten by their own mother as they are by other fish in the aquarium, so to survive they’re going to need a little help. Gather the babies.

How many eggs do fish lay per year?

Fish usually lay hundreds to tens of thousands of eggs.

Some fish in fast-flowing rivers like rainbow trout spawn once a year, and a 13-inch female can produce up to 3 000 eggs over the course of one spawning (which usually lasts a few days).

How long does it take for fish eggs to fertilize?


Bettas: 2-3 days
Goldfish: 2-7 days
Cory Catfish: 3-6 days
Angelfish: 4-7 days
Tetras: 2-5 days

How often do fish lay eggs?

Sometimes if the water temperature stays warm long enough, the fish will spawn more than once. In warmer climates outdoor goldfish might spawn two or three times a season. In aquariums, if the water temperature remains pretty much the same, they may spawn all year long.