What Are The Best Tank Mates For Molly Fish?

I cannot even imagine how people can have cruelty in them and decide to keep schooling fish like molly alone. And here we are looking for tank mates that are best at giving school of molly fish a better company. But Do you know the best tank mates for your fish? Are you thinking of adding suitable tank mates for your Molly fish but puzzled about it? Don’t worry! You are in the right place to clear your dilemma.

Some live-bearers like Guppies, Platy Fish, Swordtails, and Endlers are the best tank mates for Molly fish. Moreover, Zebra Danios, Neon Tetra, Minnow, Dwarf Gourami, Angelfish, and Snails are additional companions that you can consider as tank mates for Mollies.

This article will mention some best tank mates that you can add to the Mollies tank, including those species you should avoid keeping with them. So, let’s start with, ‘What are the best tank mates for Molly fish?

Molly Fish Typical Behavior Towards Other Fish

If you have Molly fish in the aquarium, you will agree that they are amazingly peaceful and social. They are active, pleasant, and non-aggressive fish that behaves well with other fish species when sharing a mutual aquarium.

7 Tank Mates For Betta Fish

Molly fish are typically peaceful and kind fish, which get along with other non-aggressive fish. Their non-violent behavior makes it easy to find their tank mates as they make good tank companions.

However, these adoring small-sized fish are not good with aggressive fish species. As Mollies are friendly and calm, they are unlikely to get along with offensive fish. Offensive fish fellows will bother them, where they probably will lose their calm and get unusually aggressive. It is not a healthy sign for the Mollies.

Besides, Molly fish acts poorly with tinier fish species. It sounds strange but true. Although they are peaceful and friendly, they are likely to chase smaller fish than them.

The Mollies try to follow and eat every tinier object that fits into their mouth. If they see any minute aquarium beings around, they consider them a part of their diet and chase them to munch. You can view this performance of your Mollies as an unusual trait despite being peaceful fish.

Thus, Molly fish typically have a peaceful and friendly behavior towards other fish species. However, this calm fish may lose patience and get aggressive when kept with aggressive or threatening and tinier fish.

What Are Some Best Tank Mates For Molly Fish?

If you are in a dilemma about whether your Mollies can have some tank mates, don’t worry now! But, first, I clarify your doubt that you can pick some tank mates for your Molly fish with certainty.

This fish shares their tank with other species without much trouble if their compatibility gets correct. They will share a healthy bond with their tank mates, making the tank environment sound.

Here, I have classified some of the best tank mates for Molly fish into two categories so that you will have a clear picture regarding whom to choose certainly.

Best Live Bearing Tank Mates

If you are unaware, then know that Molly fish are livebearing fish. This means they don’t lay eggs but fertilize their younger ones and gives birth to them directly.

Similarly, there exist some other live-bearing fish species, which perfectly fit to be tank mates of Mollies. They will have good compatibilities and similar traits, making them easy to share a mutual tank.

Thus, some of the best live-bearers as tank mates for Molly fish are:


  • Care Level: Easy
  • Temperament: Peaceful
  • Size: Up to 2.5 inches
  • Expected Life Span: 2 years
  • Water Temperature: 75 to 82 degrees of Fahrenheit (23 to 28 degrees Celsius)
  • pH scale: 7-7.8
  • Tank Requirement: At least a 10-gallon tank at minimum

One of the foremost live-bearer tank mates that you can consider for Molly fish is Guppies.

Guppies are famous fish due to their distinct bright and vivid appearance. They somewhat look like the combination of Tetra and Betta fish.

But don’t worry! They don’t inherit any aggressive features like Bettas and some offensive Tetras. Hence, mollies will happily live with guppies in the same tank.

If you decide to keep Guppies in the tank with Mollies, limit the male number to females. Male Guppies are more visible than females due to their impressive bright shades, although the males are smaller than females.

Like Molly fish, Guppies also don’t grow big but are only up to 2.5 inches long. Both fish requires almost similar water parameters in the aquarium and share related behaviors.

The compatibility of both these fish gets matched as they are social, non-aggressive, and share their aquarium without any trouble. However, make sure these fish get enough tank space to don’t collide. People also consider crossbreeding mollies and guppies together.

Regarding the diet for Guppies, they accept different fish food easily as their appetite seems unsatisfied. Also, they are omnivores, consuming both plant and animal matter.

Therefore, you can feed them some live or frozen diets like bloodworms and shrimp and some vegetables like lettuce, cucumber, and peas. However, don’t overfeed them as it can invite some health problems.

Platy Fish

  • Care Level: Beginner
  • Temperament: Peaceful
  • Size: 3 inches
  • Expected Life Span: 3 to 5 years
  • Water Temperature: 72 to 78 degrees of Fahrenheit (22 to 25 degrees Celsius)
  • pH scale: 7.0-8
  • Tank Requirement: At least a 10-gallon tank at the lowest

Platy fish are small-sized, fast, attractive, and social fish you would love to watch in the aquarium. These fish are available, having distinct shades like blue, red, black, gold, green, and brown.

You can view their fan-shaped fins and tails, making them different and beautiful. Also, the sprinkled black pattern on their tailpiece makes it look like the head of a Mickey-mouse.

As Platys are small, you can keep them even in a minimum of a 10-gallon tank if you don’t have a big one. But if you add them to the Mollies tank, you must look for a bigger tank. Otherwise, the tank will be overcrowding.

Fortunately, Platy fish consume a similar diet as Mollies do, which can be a plus point for you to choose them. Besides the food, they almost share the same traits that make their lives run smoothly in the tank when kept together.

These active, peaceful, and social fish are so easy to care for that beginner aquarists can also consider keeping them.


  • Care Level: Easy
  • Temperament: Peaceful
  • Size: Up to 6.5 inches
  • Expected Life Span: 5 years
  • Water Temperature: 70 to 82 degrees of Fahrenheit (21 to 27 degrees Celsius)
  • pH scale: 7.0-8
  • Tank Requirement: At least a 15-gallon tank at the lowest

Nowadays, Swordtails are available in different color forms. However, the red body shade with the black tail appearance is my personal favorite!

If you confuse the Swordtail often, you can identify them with the long extension of their tail fin in the bottom half of the body.

Due to such structure, they seem pretty big in the aquarium. Thus, make sure to provide bigger tank space for them to thrive freely.

Some male Swordtails are likely to be aggressive due to mating inducement and seeing a crowd of many other male fish. Thus, limit male Swordtail fish numbers to females.

You can feed them a variety of fish food for the diet as they are omnivorous. However, they require some green vegetable elements to complete their diet correctly.

Swordtails are active, peaceful, and friendly fish that welcome other compatible fish without aggression. Thus, they can be another best tank mate for your Molly fish.


  • Care Level: Beginner
  • Temperament: Peaceful
  • Size: Up to 1.8 inches
  • Expected Life Span: 2 to 3 years
  • Water Temperature: 78 to 82 degrees of Fahrenheit (25 to 27 degrees Celsius)
  • pH scale: 5.0-8
  • Tank Requirement: At least a 10-gallon tank at the lowest

Do you know Endlers are firmly related to Guppies that sometimes they even crossbred? Yes, they do. So, it makes sense for these Endlers to be compatible with Mollies. Hence, it also fits on the list of the best tank mates for them.

Endlers are small, colorful, and peaceful fish that are easy to care for and maintain. Along with their calm behavior, their body shade also makes them pretty noticeable.

You can see them in distinct shades like yellow, blue, red, purple, etc. Endlers also have definite shimmering blue-green scales on their body.

Concerning their diet, you can feed them baby brine shrimp and bloodworms, crushed flakes, and other small pellets food. In addition, although they are omnivorous, you can let them eat algae and other plant pieces.

Endlers are active, calm, and social fish that will not behave harshly to their tank mates. They are as peaceful and kind as Mollies, who will not mind sharing their tank.

Other Suitable Tank Mates

Apart from some live-bearers, you can select other fish species as tank mates for your Molly fish.

Fish don’t need to come under the category of live-bearers to be compatible with Mollies. Instead, it is their traits and aquarium requirement that matters the most.

Hence, here are some other suitable tank mates that you can pick as tank mates for your Molly fish:

Zebra Danio

  • Care Level: Easy
  • Temperament: Peaceful
  • Size: 2 inches
  • Expected Life Span: 3.5 to 5 years
  • Water Temperature: 65 to 77 degrees of Fahrenheit (18 to 25 degrees Celsius)
  • pH scale: 6.0-8
  • Tank Requirement: At least a 10-gallon tank at minimum

You might have heard about this great fish, Zebra Danios. Many aquarists generally like these fish as they are very peaceful and suitable for a community tank.

Zebra Danios are small-sized slim fish that are pretty fast, peaceful, and active in the aquarium. They are not shy and love exploring the tank area. You can see them often wandering a lot in the higher levels in the tank.

These fish mate for life. Due to this, the number of baby Danios is likely to increase in the tank. So if you love seeing baby fish thrive in your tank, you have to brace yourself for the preparation!

You will not see any tough challenges coming your way in feeding them. Zebra Danios eat every food you offer them quickly. They are likely to eat invertebrates and some vegetable matters.

Although they are social and peaceful, they usually tend to nip the fish’s long fins. To avoid any dispute in the tank, prefer short-fining Mollies for housing with them.

Apart from this concern, you can keep your Mollies with Zebra Danios with certainty.

Neon Tetra

  • Care Level: Easy
  • Temperament: Peaceful
  • Size: 1.5 inches
  • Expected Life Span: 8 years
  • Water Temperature: 70 to 80 degrees of Fahrenheit (21 to 26 degrees Celsius)
  • pH scale: 6.0 to 7.0
  • Tank Requirement: At least a 10-gallon tank at minimum

One of the most widespread fish species, Neon Tetras, also comes under Molly fish’s best tank mates list.

These small-sized Neon Tetras are very peaceful, striking, social, and easy to care for fish. You can mark them by their red with a transparent and metallic blue appearance. Besides, they have a calm and friendly personality, making them suitable to keep in a community tank.

Not to forget, they are schooling fish. Thus, Neon Tetras usually enjoy exploring with their group in the middle area of the aquarium.

They prefer a somewhat heavy but proper plantation in the aquarium to get enough hiding space. Also, some dark contrast substrate in the tank suits best for Neon Tetras.

Regarding diet, like Mollies, they do feed on some brine shrimp and bloodworms. Also, you can provide some other flake food as well.

I recommend you choose Neon Tetras as they share similar traits with Mollies. Also, Tetras are easy to care for and maintain, so even beginner aquarists can look after them.


  • Care Level: Easy
  • Temperament: Peaceful
  • Size: Up to 4 inches
  • Expected Life Span: 3 years+
  • Water Temperature: 64 to 72 degrees of Fahrenheit (17 to 22 degrees Celsius)
  • pH scale: 6.0 to 8.0
  • Tank Requirement: At least a 10-gallon tank at minimum

Peaceful, active, and friendly fish Minnows are also compatible fish with Mollies that can be great tank mates.

You can identify a common Minnow fish by its dull gray-silver and slight brown colors. However, some have bred and presented different shades than a usual one. White Cloud Mountain Minnow is an example of the bred Minnows. It has a striking red color on its body and tail.

In the aquarium, Minnows require somewhat cooler water degrees. Thus, maintaining ideal water parameters for them is crucial. Also, setting up rocks, live plants, driftwood, etc., is significant for their hiding spots.

Regarding diet, you can offer different fish food to them. Minnows consume plant parts, insect larvae, small shrimps, and other live or frozen food.

Dwarf Gourami

  • Care Level: Easy
  • Temperament: Peaceful
  • Size: 3.5 to 4.5 inches
  • Expected Life Span: 4 to 6 years
  • Water Temperature: 75 to 80 degrees of Fahrenheit (23 to 26 degrees Celsius)
  • pH scale: 6.8 to 7.8
  • Tank Requirement: At least a 10-gallon tank at minimum

Dwarf Gourami is small-sized Gourami species that have been the favorite of many beginner and expert aquarists.

Dwarf Gourami makes good tank mates for Molly fish as they are relatively peaceful and social. They usually thrive in the aquarium if provided a healthy diet, good companions, and a warm environment.

The tropical freshwater fish Dwarf Gourami are available in various shades. Their vibrant and distinct appearance usually adds charm to the aquarium.

Make sure you don’t keep more male Dwarf Gourami than females in the aquarium. Male Gourami tends to fight whenever they see the striking color of other male Gourami. That’s why their peaceful trait is almost relative only. However, female Gourami is unlikely to behave in this way.

Don’t worry! Male Dwarf Gourami are unlikely to attack your male Mollies. This is because they are incompatible with their male species only.

Thus, you can pick Dwarf Gourami as tank mates for Molly fish since they are non-aggressive and social.


  • Care Level: Easy to moderate
  • Temperament: Peaceful but can be semi-aggressive
  • Size: Up to 6 inches
  • Expected Life Span: 10 years
  • Water Temperature: 75 to 82 degrees Fahrenheit (23 to 28 degrees Celsius)
  • pH scale: 6.8 to 7.5
  • Tank Requirement: At least a 20-gallon tank at minimum

One of the most widespread aquarium fish species: Angelfish, also can be another option for the tank mates of Molly fish.

Angelfish are usually available fish that belongs to the species of the Cichlidae. Due to their attractive appearance and more calm behavior than other cichlids.

In the aquarium, you should keep Angelfish at least in a pair or in a group of five to six of them. As these fish are somewhat long, they require a big tank to fit their small circle.

However, during breeding, Angelfish can get territorially aggressive. Meaning that they guard their eggs where the approach of other fish species will make them aggressive. They are likely to nip the fins of other fish during this phase. Therefore, you shall be careful and observe them during their breeding phase.

While keeping Angelfish with Mollies, choose a big tank to provide enough space for both species. Also, provide enough hiding spots so that Mollies can get private time; Angelfish can secure their eggs with certainty during the breeding phase.


  • Care Level: Beginner
  • Temperament: Peaceful
  • Expected Life Span: 1 year
  • Water Temperature: 75 to 82 degrees of Fahrenheit (23 to 27 degrees Celsius)
  • pH scale: 7 to 7.5
  • Tank Requirement: Above 2-gallon tank at minimum

If you consider something apart from fish species as tank mates for your Molly fish, snails can be the one for it.

Snails usually stay in their zone without disturbing or interrupting your Mollies and other fish in the tank. They also protect themselves by tucking into the scales of any fish that gets strangely curious about them.

Snails assist in keeping the tank clean as they feed on leftover food waste, soft algae, and other tank scraps. However, you can supplement their diet with sinking pellets and algae wafers. But stay alert; your molly fish might unintentionally eat up small snails present in the tank.

Some aquarium snails like Mystery Snails, Rabbit Snails, Ramshorn Snails, Nerite Snails, etc., are suitable to pick as tank mates for Molly fish.

Fish To Avoid As Tank Mates For Molly Fish

Not all aquarium beings get compatible with your Molly fish if they share a mutual tank. Some fish species don’t prefer similar water temperatures like the Mollies, whereas some can get aggressive and harm the Mollies. Thus, you must be careful and select good companions for them.

Hence, some of the fish to avoid as tank mates for Molly fish are:


Barbs are one of those fish species that are naturally more aggressive. This is because they inherit parental aggression and anger.

They are likely to get aggressive and chase small fish whenever something seems to approach them. Also, they are fin nippers that will surely follow and munch the fins of Mollies if they live together in a tank.


Unfortunately, if you love Goldfish and think of keeping them together with Molly fish, this cannot happen.

Goldfish require a cooling water degree in the aquarium. On the other side, Molly fish, a tropical freshwater fish, enjoys warmer temperatures. Unfortunately, both species require different water degrees, making them incompatible tank mates.

The matter is not only about water temperatures but the behaviors too. Molly fish usually tries nipping the fins of Goldfish and bullying them, especially for food. Their duo in the single tank is unlikely to survive, fortunately.


It is well known that Bettas are one of the territorial fish species. They are likely to attack other fish when approached in their tank space. Also, they get aggressive and chase to nip the fins of fish like Mollies.

Besides, the water requirements for Bettas and Molly fish varies. This factor also seems to be one of the barriers for these fish to share a mutual tank. Thus, Betta fish must be avoidable when considering tank mates for Mollies.


Keeping shrimp and Molly fish is certainly not a good idea. Mollies generally eat everything that fits in their mouth. Here, Shrimps are usually tinier that can go inside their mouth and become their snack.

Also, Mollies chase smaller objects like them in the tank and tear them apart. While such a chase and attack game, shrimp can be one of the victims of Mollies. Therefore, avoid keeping the Molly fish and Shrimps together.

Points To Remember While Choosing Tank Mates For Molly Fish

As you decide to select some tank mates for your Molly fish, there are some points that you must note and follow wisely.

These points are some tips to assist you in providing the correct companion for your Mollies. They are:

  1. Since adding tank mates for Molly fish will increase the number of aquarium beings in the tank, you will require a big tank for them. If you add their tank mates in the same tank your Mollies currently live in; there will be suffocation and overcrowding. In addition, it can affect your fish health.
  2. Always analyze the size of other fish while keeping them with Mollies as tank mates. Bigger-sized fish than Mollies are likely to bully and threaten them.
  3. Avoid keeping some aggressive behavioral fish species with Mollies. Such fish can perhaps harm your fish physically and mentally.
  4. Consider choosing such fish species that have similar water requirements like Mollies. Irregular water-demanding tank mates will harm either species’ health due to a bad water environment.

Frequently Asked Questions:

What Are The Ideal Water Parameters For Mollies?

The ideal water parameters for Mollies are:

Water Temperature: 70 to 80F (20 to 25C)

pH Range: 7.5-8.5

Water Hardness: 20 to 30 dGH

Do Molly Fish Eat Their Babies?

Mollies usually eat every tiny object that fits in their mouth. Here, the Molly babies are even smaller, which are likely to be the meal of their mother Molly once she notices them.

Yes, Molly fish eat their babies if they continue living in the same tank.

Are Mollies Aggressive?

Generally, Mollies are peaceful fish. However, they can get aggressive if the tank environment makes them uncomfortable. Overcrowded tanks, threatening tank mates, fluctuating water degrees, etc., can peak the aggression in Molly fish.


If you want to see your Molly fish staying happily with their tank mates, choose the best companions for them.

While picking tank mates for Mollies, avoid fin nippers and big-sized aggressive fish. Also, look for those fish that have similar water requirements like Mollies. You can use any of the mentioned fish above as tank mates, but be aware of some aggressive fish species.

You have to watch over the significant compatibility between your Molly fish and other fish when finding companions. Your little efforts while researching and analyzing can keep your fish’s life further wholesome.

Always choose the best and healthy companions for your fish!