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How Long Molly Fish Stay Pregnant? After a gestation period of four to six weeks, the female swordtail and guppy will both give birth to anywhere from 20 to 100 live young, and mollies will deliver a brood of 20 to 60 live young after a gestation of six to 10 weeks.
In a home aquarium, mollies are quick to breed and are often already pregnant when bought at a pet shop. The eggs are inseminated by the male molly while the eggs are inside the female. Sperm can be preserved for months by female mollies and they can fertilise eggs as much as every 30 days.
Related Questions
How do I know when my Molly will give birth?
The Eyes of the Fry and Signs of Impending Birth A few days before delivery, she develops a bulge below the gills, her outline becoming fairly square in this region, while the gravid spot has enlarged its area.
How do you take care of molly fish 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.
What kind of fish is a Molly?
Poecilia sphenops is a species of fish, of the genus Poecilia, known under the common name molly; to distinguish it from its congeners, it is sometimes called short-finned molly or common molly. They inhabit fresh water streams and coastal brackish and marine waters of Mexico.
What is the cleanest fish for an aquarium?
Yes. It is possible to keep a molly fish a bowl; however, you need to make sure that the bowl is big enough, at least 10 gallons. … A ten-gallon tank or a plastic bin is more than enough to accommodate a couple of Mollies for a short period of time, as long as its clean, aerated and heated.
Can Molly fish live in a bowl?
Generally, mollies will do just fine with the natural light that comes through your window, your live plants, however, will require additional lighting.
Do Mollies need sunlight?
If kept in a healthy environment, a group of mollies will thrive and can live up to 5 years. It’s rare that you will come across a fish store that doesn’t sell mollies – they are one of the most popular freshwater fish.
What is the lifespan of molly fish?
She can definitely be kept alone, and that would be preferred to adding another male in (multiple matings and births can be stressful for her). If you can find a virgin female, you can give her some company (female that has never been kept with a male so she can’t give birth).
Can I keep a single Molly?
Proper aeration creates tiny bubbles to oxygenate water, providing the healthful environment mollies need to thrive. … Naturally occurring bubbles from filtration are not enough, so an air pump or air stone is necessary. Pump-generated bubbles aerate your aquarium, providing your mollies with breathable oxygen.
Does Molly need air pump?
The Black Molly prefers a tank of at least 30 gallons with plenty of strong plants such as Java Fern, Sagittaria, Vallisneria, and Anubias.
What size tank do black mollies need?
Females’ anal fin looks just like the rest of their other fins. More than one molly can be kept in a tank together, however, they have been known to nip the fins of others in their tank. … Since mollies usually grow up to 2″, a 10 gal tank should have no more than 4-5 fish.
Do Mollies fin nip?
Fin nipping can kill over time because the fish will become stressed. It is generally accpeted now that fish do feel pain, though it is still debated, so I would say that yes, it is hurting them.
Does fin nipping hurt fish?
If your fish suddenly develop this kind of behavior it may be an indication of stress and you should check your tank parameters to make sure they are in balance. It is not uncommon for fish in a community tank to display a little bit of fin-nipping behavior but there are times when it can become a problem.
Why are my fish nipping at each other?
The most common causes of fin rot are poor water quality and improperly-low water temperature. Overcrowding the tank, feeding outdated food, overfeeding the fish, and moving or handling can also cause stress that leads to fin rot.
Why do fish fin nip?
In most cases, fish will regrow their fins and tails, often looking just as good as the originals in most cases. … Usually if you treat fin rot before it completely eats away at the tail or fin, the fin will grow back normally.
How do I stop my fish from attacking other fish?
Some fish become aggressive when they are sick, and others tend to be aggressive towards these sick fish. Whichever the case, when a fish is being aggressive, you should observe him to see if there may be an underlying cause. Helping alleviate that cause could be the key to reducing aggression.
Can fish regrow tails?
Not necessarily if the dead fish is in the tank for a short period of time say 2 to 3 hours. But if it is in it for a long period of time then you should consider changing atleast 50% of the water. Remember never change 100% water since the beneficial bacteria in the water may die off.
Do fish attack sick fish?
If the dead fish isn’t found soon enough, the entire body may be consumed, leaving no trace of the missing fish. This is often the reason for a mysterious fish disappearance. … Changes in the makeup of the tank inhabitants, or even rearranging decor, can impact fish behavior. It’s also possible the fish died of old age.
