Depending on water conditions, temperature, and diet some livebearers can have broods
as often as every four to eight weeks
. You can tell if a female is ready to give birth by her enlarged abdomen or a dark spot located near her anal fin.
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.
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.
How do fish give birth in a tank?
Some aquarium fish
carry the eggs inside of them
. When the eggs are fertilized, they eventually hatch inside the mother, and the babies emerge in a live birth. Other types of fish lay hundreds of eggs in nests within the aquarium, in this case, the males fertilize these eggs, and then they hatch into live fish.
How do you know when fish are pregnant?
When pregnant, there is a
slight discoloration that slowly darkens as
the guppy progresses through pregnancy. The patch first has a yellowish tinge, then brown and become deep orange as the pregnancy develops. This patch is where the fertilized eggs are stored and grow.
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.
Should I remove fish eggs from tank?
Even though these eggs are infertile, you should still protect them from other fish as well. It is essential to leave the
unfertilized eggs
with fertilized ones because once any fish eats an unfertilized egg, it will go for a fertilized egg after that.
Will baby fish survive in my tank?
Not necessarily
. Many fish breed very easily and produce great numbers of offspring, simply because very few will survive to adulthood. The more fish in your tank, the more you will need to feed them, the more feces they will produce and the harder your filtration system will have to work.
Do fishes sleep?
While fish do not sleep in the same way that land mammals sleep,
most fish do rest
. Research shows that fish may reduce their activity and metabolism while remaining alert to danger. Some fish float in place, some wedge themselves into a secure spot in the mud or coral, and some even locate a suitable nest.
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.
How do I know if my fish are mating or fighting?
Fish chase each other for a variety of reasons
, such as defending their territory, establishing dominance, competing for food, and mating. Even fish that are typically docile fish may chase others because of constant stress. This could be due to incompatible tank mates, poor water conditions, or an overcrowded tank.
What animal gives birth out of its mouth?
The frog
gives birth through its mouth. Researchers are trying hard to bring one of the world's weirdest, and undoubtedly coolest, frogs back to life. The Gastric-brooding frog became extinct in the mid-1980's.
Do fish get bored?
Just like any other pet,
fish can become bored, too
. And while they won't chew up your shoes, keeping them occupied will ensure they live a healthier life. … Bettas particularly enjoy moving them around the tank, but just about any fish will be curious enough to check it out.
Do sharks give birth through their mouth?
Port Jackson sharks do the same thing,
carrying the egg cases in their mouth until they find a safe spot
. … That's about the extent of an oviparous shark's parental commitment, though. The embryo is nourished by the yolk in the egg sac and chews itself out when it is fully developed.
