How Long Are Black Mollies Fish Pregnant in the USA
The gestation period of a molly fish is around 60 days. Female mollies can store sperm for months and may fertilize eggs as often as every 30 days, even when no male is present in the tank. Mollies may release 10 to 60 live fish at a time.
How long is a molly fish pregnant for?
Mollies 50-70 days.
How long do black molly fish give birth?
Gestation and Birth Female mollies will gestate their young for about 60 days. They can give birth to between 40 and 100 fry.
How many babies do black mollies have at a time?
Once the female is pregnant, the gestation usually take about 7-8 weeks, at which point the female may deliver upwards of one hundred babies. On average, the female will deliver anywhere from 40-100 fry, though you can expect younger female mollies to be on the lower end of that scale.
How do I know if my fish is pregnant?
As your female fish becomes pregnant, she will grow a bulge at the back of her abdomen. This typically appears over the course of 20-40 days. Does your fish have a red or black spot? Sometimes, when a female fish is pregnant, she will develop a “gravid spot” on the abdomen.
Do mollies eat their babies?
Cannibalism is normal with mollies and other livebearers like guppies and platys. As fecund as they are, you don’t really need to worry about saving every last one.
How long do fish stay 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.
Do pregnant mollies hide?
A gravid molly will have a change in behavior, usually becoming slower, and tend to hide more than is normal only coming out to feed. Your fish might also become more aggressive to tank mates, particularly those that venture into her hiding spot.
How many eggs do Mollies lay?
How many eggs do molly typically lay? None. They’re live-bearers, which means live birth. Anywhere from a few to over a hundred could be born.
What is the lifespan of molly fish?
The molly fish lifespan is two to five years. This freshwater fish is not known to live a long life. Their lifespan actually depends on the environment you provide when keeping them as a pet. The water conditions impact the lifespan of mollies as they are prone to diseases if the water conditions are poor.
How many mollies should be kept together?
Keeping Molly Fish Together You should keep them in groups of at least four or more, they naturally stick together. The group should be made of mostly females since males are known to harass them.
Can Mollies change gender?
Mollies are not able to change gender. The gender of these fish is determined by their genetics so it is impossible for them to change sex.
How many black mollies can I put in a 10 gallon tank?
Ideally, you should have a 10-gallon aquarium for a molly fish. Depending on the species, you may add up to four mollies to the tank. For Sailfins and other larger mollies, however, you’ll need to arrange a 30-gallon aquarium. To live comfortably, each extra molly will require about 3 additional gallons.
How do you tell if your fish is pregnant or just fat?
Carrying Eggs – One reason your fish may appear slightly bigger is because it is carrying eggs. If your fish is a female, is not overly fat, and is normal in most other regards, this is a very high possibility. Another indication is if your fish has an enlarged vent; this is where the eggs will come out.
Where is the gravid spot on a Molly?
The Gravid Spot Is Very Visible The spot is triangular in shape and gets darker and larger the closer a molly is to giving birth. The spot is located towards the anal vent of the pregnant Molly.
Why does my fish have long stringy poop?
Constipation in fish is typically revealed by bloating and the production of stringy feces. Normal fish feces will immediately fall to the substrate; constipated fish feces will appear stringy and hang from the fish. Constipation doesn’t affect how much feces a fish makes, but how easily it can get rid of them.
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.
How often do mollies have babies?
The gestation period of a molly fish is around 60 days. Female mollies can store sperm for months and may fertilize eggs as often as every 30 days, even when no male is present in the tank. Mollies may release 10 to 60 live fish at a time.
Should you separate baby fish?
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.
How do mollies mate?
The Basic Mating Behavior of Black Mollies When black mollies mate, the male will transfer milt, the fluid that contains his sperm, into the female’s body using is gonopodium. The gonopodium is a special anal fin that is shaped like a rod rather than a normal fin.
How do you take care of baby black mollies?
Raising Fry The fry should be fed a quality food, such as baby brine shrimp, baby fish food, or quality flake food ground into a fine powder. Feed the fry small amounts several times a day. Maintain good water quality by performing regular water changes.