Can Baby Molly Fish Live Without A Filter?

Molly fish are one of the most beautiful and colorful freshwater fish. They can grow up to four inches in length and often live for around five years. Aquariums with these fish are beautiful and fun to watch. They can become a great hobby, but they also take work to succeed. One of the most important requirements for Molly fish is aquarium filtration. Can baby Molly Fish live without a filter?

Yes, baby Mollies will survive without an aquarium filter if enough food is in the tank. In addition, baby Molly fish do not produce much waste and are also relatively easy to take care of. Therefore, they don’t require a huge tank and can live without an expensive filter.

In this post, we will discuss baby Molly fish, their living conditions, and whether or not they can live without a filter.

Water Parameters Needed For Shrimp

Do Baby Molly Fish Need Filter?

Baby Molly fish can live in a bowl. However, you must change the water every two days. Breeders often sell these fish, claiming they live without needing special equipment or care.

But baby molly fish can’t live on their own for long periods. There is no filter to keep baby molly fish alive and healthy because they come from rivers and polluted ponds areas.

Can Baby Molly Fish Live Without A Filter?

Can Baby Molly Fish Live Without Filter?

The babies of different types of Mollies has similar tank requirement. But some of these baby Mollies are not compatible with others. Baby mollies look so cute that you genuinely want to make sure they are okay.

Yes! You can have baby molly fish live without a filter because you provide them clean water every day. So, it is best to keep it away from too many chemicals. You can give baby Molly a clean water source. In addition, you have to change their tank’s water every week so baby mollies do not get sick from the dirty fish tank.

Appropriately maintaining baby Mollie tanks will give them a healthy and happy life. This is why they are one of the best beginner fish.

Why Does Baby Molly Fish Need A Filter In Tank?

The filter helps to keep the water clean and clean by removing all of the dirt, debris, and waste from the tank. The filter is essential for fish because it keeps them safe in their environment. If you do not want to risk your fish dying, we recommend getting a good filter for your aquarium.

How Does Filter Work?

A filter is a device that filters out particles in water, thus cleaning the tank. The most common types of filtration for fish tanks are biological and mechanical.

Biological Filtration: This process occurs by adding beneficial bacteria to your aquarium, which helps with ammonia reduction.

Mechanical Filtration: A foam sponge or pad in the filter traps all of the dirt in your tank. You can then clean the sponge if it needs replacement.

Which Filter Is Best For Baby Molly Fish?

There are fancier fish tanks with an upgraded filtration system with multiples filters. However, you can quickly get away with having just one filter in their tank for baby Molly Fish.

Some of the filters you can use in your tank are:

  • Sponge Filter is the most basic of all filters. It will attach to your tank at one end, and you can place an air tube in it that runs down into your baby Molly Fish’s water.
  • Undergravel filters are best for tanks without a hood because they don’t require light or electricity. However, if there is no hood, you will need to raise the water level in your baby Molly fishtank to be above the filter.
  • Aquarium filters are just like undergravel, but they also use an air pump and fit in tanks of any size. However, there must always be a hood on the baby Molly fish tank since it uses electricity. 
  • Canister filters are the most powerful and perfect for baby Molly Fish tanks of any size. They have a long tube that runs from the filter to your baby Molly fish tank, which contains all sorts of media for filtering baby Molly Fish’s water.

How To Keep Baby Molly Fish Safe And happy?

Baby molly fish are small, peaceful, and easy to care for. However, baby mollies can be sensitive to their environment. So, some of the things that you should consider to keep baby Molly fish safe and happy are:

Tank Size

Molly fish babies need to live in a minimum of 20 gallons tank. If the tank is smaller, you will not keep baby mollies safe and happy. You can either use a glass aquarium or purchase a more durable acrylic one.

But never try to put baby Molly fish inside bowls because they don’t get enough oxygen. Baby Molly fish tend to die pretty quickly. Make sure to separate baby molly fish from the parents at the right moment.


The temperature of the baby molly fish tank should be anywhere between 73°F (23°C) and 82°F (28°C). Anything above that can harm your baby mollies, and the temperature below it will not let them survive for long.


You must put at least two standard fluorescent light tubes in the baby molly fish tank. Ensure this lighting is on for around 12 hours a day and off for the next 12 hours. Lighting plays a vital role in keeping baby Molly’s fish safe and happy because it aids photosynthesis which provides your baby mollies with oxygen.


The baby molly fish tank should have at least two inches of water. But it shouldn’t be too much either because baby Molly fish can suffocate in deep waters. Also, the baby mollies need to stay hydrated. So make sure you change their water once or twice a week, depending on the size of the tank.


You need to feed baby Molly fish at least three times a day with high-quality food. Ensure you provide baby Mollies properly once they are full and never overfeed them because it can cause bloating. Usually, this leads to death if not treated on time. Also, make sure the baby molly fish tank has baby Molly food easily available in the market.


You need a baby molly fish tank with some decorations like rocks and plants. It will make baby Molly fish safe and happy. There is no specific decoration that you can use. But if baby Molly fish don’t come out of their hiding places, there is something wrong with your baby mollies. Place live plants like java moss, baby tears, and baby water hyacinth.

Lightweight plants like baby anacharis, baby arrowhead, and baby wisteria vine are also good. Make sure these plants don’t have sharp edges because baby mollies can hurt themselves on those things, which will lead to death if not treated immediately.


You need to beware of the following things which can be dangerous for your baby fish – soap, detergents, cleaning agents, chemicals used in tap water, heater, and aquarium filter. Also, watch out for the behavior of baby Molly fish. If you notice that they are hiding, baby mollies aren’t safe in their tank.

One way to keep baby Mollies safe is by putting two drops of garlic extract every week into their water which will help them fight against infections caused by viruses, bacteria, fungus, or even parasites.

How To Clean Baby Molly Fish Tank?

Before cleaning the baby Molly fish tank, remove all baby Mollies from the fish tank because the filters might trap the baby Mollies and cause them to die. So, never leave your fish alone in the tank near the filter when cleaning.

Make sure you drain the tank of all water and change the decor before cleaning baby Mollies’ baby molly fish tank. Now, pour fresh water into the tank and a tap water conditioner, making your job easier because it removes chlorine from tap water.

Now, you should scrub the tank with a safe cleaner. Make sure you rinse the baby molly fish tank twice or thrice till all the baby molly is clean baby molly fish tank smells nice.

After that, fill your baby molly water pump up with dechlorinated tank water, and baby Molly it in the baby molly fish tank for around 20 minutes.

Now, scoop baby Mollies back into the tank and some decoration, making your job easier because you have to put everything back where they were before cleaning baby Mollies’ baby molly fish tank.

Some FAQs

How Many Baby Mollies Do Molly Fish Produce?

Molly fish can produce baby fish when they mate in the spring. Usually, they will have about 40-100 babies Molly fish per batch.

How Many Biofilm Do Baby Molly Fish Need?

The amount of bio-film needed depends on your tank’s size and how many baby mollies you want to raise in it. The more baby Mollies there are, the more food they will need to grow into healthy adults who can live in your tank.

Is Bio-film the Same as Algae?

No, bio-film is something that baby Mollies eat to grow and develop into healthy adults. It contains food for baby fish which will help them thrive during their first few months.

How Long Does It Take For Baby Fish To Grow?

It takes baby molly fish about three months before becoming fully grown adults, ready for life outside an aquarium.

What Is The Best Food For Baby Molly Fish?

Live brine shrimp is one of the best food for baby molly fish. Mollies can get an easily digestible protein source from it. You should also feed baby Mollies live baby blackworms, daphnia, and plankton, which are excellent proteins that baby molly fish can eat.


Keeping baby Molly fish safe and happy can be a tedious task. You need always to remember that baby Mollies can die pretty quickly if you fail to meet their needs or feel uncomfortable somehow. So make sure baby Mollies have a safe and spacious environment with baby Molly filters if you want them to live longer.

Moreover, it is pretty rewarding to happily see your baby mollies swimming around their baby molly fish tank. If you have any questions about the baby Molly fish and its need for a filter, please feel free to leave them in the comments below! I would love to answer them for you!

Good Luck!!

Happy Fishkeeping!!