Mollies Fish Tank Mates: 9 Peaceful Companions List (Proven)

Mollies are peaceful, colorful freshwater fish that make excellent tank mates for many other species. Whether you’re looking to add extra color and activity to your aquarium or want some companionship for your mollies, there are plenty of great mollies fish tank mates.

In this blog post, we’ll explore nine of the best molly fish mates available, proven to be peaceful and compatible with molly behavior.

We’ll also discuss important factors like water conditions and size compatibility so you can ensure a happy environment for everyone in the tank!

can betta live with guppies

Read on to learn more about making sure your mollies have the perfect cohabitants in their aquatic home. 

What Fish Can Live with Black Mollies?

What fish that can live with mollies? Black Molly Fish make great companions, especially with other peaceful tropical freshwater fish like Guppies, Platies, white cloud mountain minnows, Danios, and Tetras.

Not only that, but they also get along famously with Swordtails and Gouramis – even female Betta fish!

Even if you want to mix it up in your community tank or pond environment, Black Mollies can turn any space into a peaceful aquatic utopia for everyone involved!

Here are some Great black molly tank mates:

Peaceful Fish:

  • Guppies: Close cousins to mollies, sharing similar water requirements and temperament.
  • Platies: Another livebearer species, playful and colorful.
  • Swordtails: Similar activity levels and size can even interbreed with mollies.
  • Tetras: Neon, Cardinal, Rummy Nose, Diamond, and Glowlight tetras all do well.
  • Danios: Zebra and Celestial Danios are active and hardy, adding movement to the tank.
  • Dwarf Gouramis: Peaceful bottom dwellers with beautiful colors.
  • Corydoras Catfish: Excellent algae eaters, adding a different level of activity.
  • Ram Cichlids: Peaceful community cichlids, but ensure enough space and avoid aggressive strains.
  • Shrimp: Cherry shrimp and Amano shrimp can co-exist with mollies but may be eaten by fry.

Other Considerations:

  • Snails: Mystery or Nerite snails help clean the tank and provide interest.
  • Plants: Provide plenty of hiding spots and enrich the environment.
  • Tank size: Minimum 20 gallons for a small group of mollies; adjust for additional fish.
  • Water parameters: Maintain stable temperature (75-80°F) and pH (7.0-7.8).
  • Feeding: Offer a varied diet of flakes, pellets, vegetables, and live/frozen food.


  • Large or aggressive fish that may bully or eat mollies.
  • Fish with different water requirements.
  • Fin nippers like barbs, which can harass your mollies.

Research each potential tank mate before adding them to your black molly community. This ensures compatibility and creates a thriving aquarium for all your fish!

can tetras live with mollies?

Yes, tetras can generally live with mollies! They can be the best tank mates for mollies, as long as you consider a few things about fish that go with mollies:


Temperament: Both tetras and mollies are peaceful fish that thrive in community tanks. They won’t bother each other and can create a beautiful, vibrant aquarium together.

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  • Neon Tetra fish

Size: Mollies can grow larger than some tetras, so it’s essential to choose tetra species that are similar in size to avoid predation. Neon tetras and cardinal tetras are popular choices for molly tank mates.

Water requirements: Both fish prefer similar water parameters, with a pH range of 7.0-7.8 and a temperature range of 75-80°F. This makes keeping them happy and healthy in the same tank easy.

Things to keep in mind:

  • Tank size: Make sure your tank is large enough to accommodate tetras and mollies comfortably. A good rule of thumb is 1 gallon of water per inch of fish.
  • Plants: Provide plenty of hiding places for your fish, especially the tetras. Plants will help them feel secure and reduce stress.
  • Feeding: Both tetras and mollies are omnivores, so that they will do well on a varied diet of flakes, pellets, and live or frozen food.

Will Mollies Eat Other Fish?

Mollies usually leave other fish alone if they are not significantly smaller than the mollies themselves. If you introduce small fish alongside mollies, there is a chance that they may be eaten.

For this reason, it’s essential to check that all mollies tank mates are similar in size and temperament before adding them to the aquarium.

Can I Keep Mollies with Bottom Dwellers?

Mollies can live harmoniously alongside peaceful bottom dwellers such as Corydoras, Catfish, and Shrimp!

Make sure all your mollies tank mates are relatively similar in size and temperament so they don’t get bullied or eaten!

Additionally, it is essential to check the water parameters for both creatures to make sure that they are compatible with each other.

What Makes a Good Tank Mate for Molly Fish?

There are more than 30 species of mollies available to purchase, and only a few tank companions can survive with these.

The tankmate of molly fish is best when they can become tranquil and omnivorous and live in other locations of tanks when the molly fish lives there.

How Many Mollies Should Be Kept Together

Mollies tend to be peaceful and get along with nearly all tanks. However, the best approach is to avoid fish breeds that are bigger and more aggressive than they are.

When you catch cichlids in caves, you might find them eating them when you can.

Points To Remember While Choosing Tank Mates For Molly Fish

When choosing tankmates for Molly fish, certain things you must note and follow carefully. This post provides tips to ensure that mollies can find you a suitable companion. It’s:

  • Know the size of your molly fish.
  • Make sure tank mates are of similar size, temperament, and species.
  • Pay attention to the water temperature and pH requirements for all tank mates.
  • Choose compatible omnivorous or herbivorous fish that do not have a naturally aggressive nature.
  • Monitor the tank for any signs of aggression between fish.
  • Make sure your mollies have adequate hiding spots and places to explore

By following these tips, you can ensure that all your molly fish have suitable and peaceful tank mates in their aquatic homes!

What Fish Can I Put with My Mollies? (Mollies Fish Tank Mates)

Fish Compatible with Mollies (List)

  • Guppies
  • Danios
  • Tetras
  • Swordtails
  • Gouramis
  • Female Bettas
  • Corydoras Catfish
  • Shrimp

Introducing peaceful and compatible fish to your molly tank can create a peaceful aquatic utopia for everyone involved!

Top 9 Molly Fish Compatible Tank Mates

Neon Tetras

Neo Tetra A favorite fish for fish keepers, the neon tetra is a colorful and lively fish quickly taken care of. The animal has a calm personality. They reach the size of 1.5 inches and have a longer lifespan, approximately eight years in the wild and about five years in the house aquarium.

Their colors consist of red transparent as well as metallic colors. Neontras have an aquarium in fresh water and should take about 15 gallons. They are primarily in school and prefer to get out of the water to swim. They need vigorous plants in their soil for shade or to hide from the elements.

Gouramis (Osphronemidae)

Most Gouramis eat all kinds of food and can also make excellent mollies tank mates. However, knowing what type of Gourami you want to add to your tank is essential because there are different aggression levels.

Also, consider the size, as certain species can grow large. You will look for a peaceful gourami to mix with mollies, fish, or companions.

Sailfin Molly

Sailfish mollies can also be very popular among mollies fish because of their large size and colorful colors. A male swan has big, showy long fins to overcome competitors and charm mates.

Sailfin mollies get big, and the female is enormous. So when their size increases, they need more giant aquariums. The sail-fin Molly is less prone to sloppy conditions than other molly species are.

And the most important thing is to keep salt in their water for good results. If you add more, the better, though pure fresh water can cause them death in the long run.

Endlers (Poecilia wingei)

Endler is less well-known than most molly tank mates in this list, and they’re calm enough to tolerate molly fish well.

These guppies are crossbred with the mollusks, and the dogs are tolerated as a family. Because they share similar temperaments, diets, and social skills, they are good tankmates for mullet fish.

Guppy Fish (Poecilia reticulata)

The Guppies fish is the most peaceful species available and enjoy good interaction with other molly fish. Both species eat fish and are omnivores.

Guppy fishes can also be cared for easily, and both species are livebearers, making them more compatible.

Platy Fish

Platypus fish are petite, fast-looking, and attractive and would be wonderful to observe in your aquariums. The fish is available in various colors, such as blue, red, black, golden green, or brown.

They have fan-shaped limbs and tails, which are distinctive. The black swirled tailpiece looks like Mickey Mouse. As platys are tiny, they can be placed inside tanks up to 10 gallons unless large ones are in them.

Nonetheless, if you put them in the Mollies tank, you need another larger tank. The tank is likely to become overcrowded.

Zebra Danios

Zebra danios are extremely young fish with a white striped back and have the same pattern as those with zebra stripes. It’s fast and loves moving and exploring aquariums.

They’re most commonly found at local aquariums and are very social, though it is sometimes possible they’ll bite at others’ fins. Keep an eye on this! Pro: Con:

Platys (Xiphophorus)

Platypus is another quiet species of fish that other fish very well tolerated. This brightly colored fish is small, fast, active, and exciting.

They eat similar food to molly fish, are easy to take care of, and have a calm personalities. They’ll be good companions for your molly fish.

Dwarf Gourami

Gourami is the largest species of Dwarf, popular with novices and experts in water science. Despite being relatively peaceful, they also make good molly tank mates.

It is typical to thrive in aquariums when given good companionship and a warm place.

Tropical freshwater Dwarf Gourami can be found in various shades. Their lively, distinctive appearance generally brings charm to aquariums.

Keep the tank clear of male and female Gouramis. Male Gourami usually fights if seen against another man when he has contrasting colors of other Gourami.

So peaceful traits have become very limited to a certain extent in some countries.

Do Mollies Need to Be in Groups?

Are mollies schooling fish? Mollies are naturally social creatures, so to ensure their emotional well-being, keeping a sizable school in the aquarium is best.

We suggest having at least four fish for them to interact with and larger groups when possible!

Keeping them in groups also helps to reduce stress levels and creates a natural environment where the fish can feel safe.

Additionally, mollies are fascinating to watch as they form different patterns with their movements and interact with each other.

So while keeping them in groups is not mandatory, it is highly recommended for their health and well-being.

How Many Mollies Should Be Kept Together?

The suggested number of mollies kept together depends on the size of your tank and the community fish you have. Generally, we recommend having at least 4-6 molly fish for a 10-gallon aquarium.

However, if you have larger tanks with plenty of other compatible species, you can include up to 12 or more molly fish.

Keeping too many mollies together will reduce the oxygen levels in the aquarium, so be sure to keep this in mind when choosing how many fish you want to keep!

How Many Mollies in a 10-Gallon Tank?

How many mollies in a 10 gallon tank? With just a few inches of mollies, you can create an enchanted underwater world in your 10-gallon tank for four. 

We recommend keeping at least 4-6 molly fish in a 10-gallon tank.

However, if you have other compatible species of fish in the tank, you can increase the number of mollies to 8 or more.

Be sure to keep an eye on water parameters and oxygen levels when increasing the population size in your aquarium.

What Size Tank Do Mollies Need?

What size tank for mollies? Molly fish tank size depends on the number of mollies you plan to keep in the aquarium.

For a single fish, we recommend at least 5 gallons of water. However, if you want to keep more than one Molly in your tank, you should purchase a bigger tank size.

It’s generally recommended that you add one more gallon of water for every additional Molly.

So if you want to keep four mollies in the aquarium, we recommend using at least a 10-gallon tank.

Consider other fish species in the community when selecting the perfect tank size for your mollies.

Molly Fish Tank Setup:

Setting up a fish tank can be difficult, especially if you’re new to the hobby.

Many fish keepers give up on keeping fish because they think it’s too hard or they don’t have enough time. However, setting up a Molly fish tank can be simple.

With the right equipment and some time, you can easily create a home for your mollies that’s comfortable and safe.

Molly Fish Tank Setup is here to help. In this video, we’ll show you how to set up your fish tank quickly and easily, so you can enjoy your new pets immediately.

Start by choosing the right size tank – 10 gallons or larger is best. Then add a good filter to keep the water tank clean and clear. You’ll also need a heater to keep the temperature around 78-82 degrees Fahrenheit.

Also, ensure plenty of hiding spots and places for your mollies to explore. Driftwood, rocks, and plants can help make the tank look natural and provide enrichment for your fish.

Finally, do regular water changes to ensure the tank is healthy, and your mollies are happy.

Molly Fish Care:

Caring for molly fish can be a rewarding experience, as they are easy to care for and relatively hardy.

However, to keep them healthy and vibrant, you should follow some essential guidelines.

What Cichlids Can Live with Mollies?

When selecting fish for your tank, Cichlids make excellent companions for Mollies.

A few particularly compatible species include Dwarf Cichlids, Rams, and Discus – as well as Keyhole and Severums cichlid varieties.

Double-check the specifics of your chosen fish before adding them to their new home!

What Fish Can Live with Mollies and Guppies?

Guppy and molly tank mates are great, as these species get along well. You should try to keep fish of similar size together to avoid disputes. 

Some good molly and guppy tank mates include other peaceful fish like danios, tetras, platys, swordtails, and various livebearers.

Be sure to keep your tank clean and monitor water parameters. This will help ensure that all the fish in your aquarium are healthy and happy!

Finally, keep appropriate care instructions in mind for your fish species. Understanding the needs of each type of fish is essential for maintaining a thriving tank environment.

Can Mollies Live with Bettas?

Are mollies good with bettas? Mollies and Bettas can technically live together; however, it is not recommended. 

The key to keeping these two species together is careful observation and proper tank maintenance.

Bettas are known to be aggressive fish, so that they may harass the mollies in an aquarium setting.

Additionally, both species prefer different water temperatures – with mollies prefer warm water and Bettas favoring cool water.

Keeping these two species separate is best to prevent any potential disputes or health issues.

These are the basics of keeping Molly fish! With proper care and tank maintenance, your mollies can live a long and happy life in your aquarium.

Would Black Mollies and a Parrot Fish Be good Tank Mates?

Black mollies and parrotfish can be compatible tank mates, but it is vital to consider the size of your aquarium.

Parrotfish are large fish that require plenty of swimming space, while Black Mollies stay small and prefer a more confined environment.

Additionally, it would help if you kept an eye on water parameters and tank maintenance.

Parrotfish are very sensitive to water changes and must ensure the aquarium is cycled correctly and maintained.

By ensuring that your aquarium can accommodate both species and providing them with the proper care, you should be able to keep these two fish happily together in your tank!

Guppy Fish Tank Mates

When it comes to selecting tank mates for your Guppies, there are many compatible species available. 

Some of the best tank mates for guppies include other livebearers such as mollies, platys, and swordtails; danios and tetras; or even small cichlids like Rams and Discus.

Be sure to keep your tank manageable, as this can lead to territorial disputes and increased stress levels.

Additionally, it is important to check the water parameters of all fish species and ensure they are compatible before adding them to the aquarium.

Platy Fish Tank Mates List

Platy fish make beautiful additions to any aquarium and can be great tank mates for many different species.

Some compatible tankmates for platys include other peaceful community fish such as mollies, guppies, swordtails, and danios; small cichlids like rams and discus; or even livebearers like Bumblebee Gobies or Honey Gouramis.

When selecting tankmates for your platyfish, avoid any overly-aggressive species that may damage their fins or cause stress.

Additionally, providing plenty of hiding places and oxygenated water is essential to keep all the fish happy and healthy.

With this in mind, you should be able to create the perfect tankmates for your platy fish!

Do Mollies Clean the Tank?

Mollies are an ideal choice for anyone looking to keep their aquarium sparkling.

Their appetite for algae helps ensure your tank remains sanitary, as they take care of any unwanted growths on rocks and plants while you relax!

However, mollies are not the only fish that can help to clean your tank.

Other species, such as danios and Corydoras catfish, can also help keep your aquarium free of debris and expensive chemicals.

Ultimately, having a variety of scavenger fish in your aquarium is the best way to keep it clean and healthy.

This allows you to create a balanced ecosystem that supports your tank looking its best!

What is the Best Way to Feed Mollies?

Mollies are omnivores and can be fed both live foods as well as prepared fish food. When feeding mollies, it is essential to provide them with various foods containing plenty of protein, vitamins, and minerals.

Do mollies eat their babies

Live foods like brine shrimp or tubifex worms are particularly beneficial for mollies, as they provide essential nutrients that prepared fish food cannot.

Additionally, providing supplemental plant matter in the form of blanched vegetables can help your mollies get all the vitamins and minerals they need.

Above all, it is essential to pay attention to your mollies’ feeding habits and ensure that they are eating enough food. This will help keep them healthy and give them the energy they need to stay active!

Best Live Bearing molly fish Tank Mates

If you aren’t aware, Molly fish is livestock. They are not laying eggs but fertilize their children, and they give birth direct. Other live fish also exist, which are suitable for Molly’s tankmates.

They should have good compatibilities and similar characteristics, which makes sharing the tanks easier. Consequently, some of the best living beakers in Molly’s tanks are the following:

Where Do Molly Fish Prefer to Live in the Aquarium?

Mollies love spotting, where they can explore tanks, hide away from coral reefs, and have accessories they can jump from or dive into.

Although they can be found throughout the aquarium, cleaning up their water bottles is best.

Are Molly Fish Easy to Care For?

Molly is a better way to keep fish in the aquarium! Keep in mind that their bodies enjoy salting the water, and algae and other fruits must be consumed to maintain health and remain healthy.

Do Molly Fish Eat their Babies?

Livebearers of any kind are notoriously eager to consume their babies within the first few hours, and Molly fish are certainly no exception.

The female will try to eat a fry before or during pregnancy as soon as possible.

These maternal signals turn out later because mollies never care about the children, unlike mammals.

They have been conceived and must now face themselves. Mollusks were just as quickly disappearing into the water in nature as other fish.

The swarms of newborn mollies eventually become the subject of the constant hunger of their parents, who will gladly take them as a snack.

Caring for a Pregnant Molly Fish

You don’t need to worry about what happens during your fish pregnancy. Give them warm food or good water. Like most life-bearing fish, mollies often display pronounced gravid spots when pregnant.

Gravid spots are black spots where the ovaries fall and peek through the thin skin of the pregnant Molly fish’s skin. Molly’s colors are profound compared to some livebearers; this is not often visible with baby fish.


Molly fish are an excellent addition to any aquarium, making great tank mates with other peaceful fish species. They are relatively easy to care for and can even eat their babies if given a chance! It’s important to remember that Mollies need plenty of space to thrive, so it’s best to keep them in an adequately sized tank with plenty of hiding places. When considering which fish you’d like as Molly fish tank mates, choose compatible species with similar size requirements and behaviors. Your hardy fish will remain healthy and happy for years with proper care.

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About Me

I am the founder of, a devoted wife and mother, and an avid fish enthusiast. My aim is to assist fellow fish lovers worldwide in understanding how to properly care for and breed their pet fish.

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