can you put a male and female betta fish together

Can You Put a Male and Female Betta Fish Together?

Sharing is caring!

Many hobbyists know that male betta fish can’t be put together and some might even know that females don’t do so great in groups either. But males and females must surely get along, right? Well, it’s not that simple.

Though male and female betta fish need to be together and interact in order to breed, more often than not, this will lead to dead or injured fish if attempted by a beginner. Never try to house any color, variety, or sex of betta together without doing research first!

Keep reading to find out why you probably can’t keep male and female betta fish together, and how you could go about trying to keep them together in your freshwater tank in the future!

Reasons For Putting a Male Betta with a Female Betta

There is really no other reason to put a male betta with a female betta in the same tank unless attempting to breed.

We all know that betta fish are solitary fish that like to set up territories in the aquarium setting. This isn’t any different in their natural habitat. However, there’s plenty of space for males and females to come and go and coexist in their own separate territories.

In their natural habitats, these fish might only ever encounter each other during spawning seasons.

Also, consider that these environments are densely packed with vegetation and there’s room for the fish to swim to and hide if things start to go wrong. In the aquarium, this isn’t possible.

If attempting to put male and female fish together in the same tank for purely aesthetic choices because of their beautiful colors, then this will likely result in the death of one or both fish.

Can You Put a Male and Female Betta Fish Together in a Large Enough Tank?

Male And Female Betta Fish Together In Aquarium

This is a highly debated topic within the betta fish community. However, most hobbyists would say that you can’t keep male and female betta fish together, even if you have a large enough tank.

Not only will the fish eventually find each other and fight or aggressively mate, but that is also a lot of wasted space for a handful of fish that could otherwise be filled with hundreds of tetras or other community freshwater fish!

It should be noted that some hobbyists have had success keeping harem tanks of female betta fish with only one male fish.

However, these aquariums are expertly maintained and treated with dense vegetation, the highest quality food, and prepared for housing for the potential spawn.

Why Is Your Male Betta Attacking Your Female?

When placing a male and a female betta together, you should anticipate attacks. Remember, these fish show aggression to their own reflections, so if you put an actual fish in front of them, the result won’t be much better.

But what if your fish were getting along fine and then the male suddenly goes after the female? This could be part of the breeding process.

Betta fish have an especially aggressive nature when they breed. The act of it alone can lead to a dead female betta fish as the male wraps around her, nearly crushing her, and leaving her near lifeless at the bottom of the tank once the bubble nest has been filled with eggs.

Unfortunately, there’s no way to gauge how much aggression your male will show during these periods, so you should be prepared to lose a fish or two.

If breeding this way, a sorority setting is recommended so that the male doesn’t overly harass the one singular female before it’s time to mate.

However, say that you’ve successfully bred the same male-female pair before and you want to try again. This doesn’t automatically mean that the fish will accept each other again and it’s still a very real possibility that you will lose a fish.

What If You Want to Breed Your Male and Female Betta Fish?

Breeding betta fish is very difficult and should only be attempted by expert hobbyists who have the space and money to not only have large tanks for the breeding and spawning process, but also the resources to care for and sell those spawns.

The Fascinating Mating Process of Betta Fish

Can You Put A Male And Female Betta Fish Together

If attempting to breed your fish, then you should always use high-quality bettas that you know will pass on good, sustainable genes.

It isn’t ethical to go through the poor selection of betta fish they have at pet stores as these fish have already likely been inbred and housed in bad conditions. As well, it’s important to consider the resale price of the spawn.

As we’ve already mentioned, a male may be introduced into a harem setting under special circumstances; this should only be attempted in a very large tank, preferably in excess of 55 gallons (208.2 L) with lots of plant life.

Some hobbyists have had success keeping one male and one female in a 20-30 gallon (75.7-113.6 L) tank for only the duration of the breeding process.

The male should be placed in the aquarium first and allowed to make a bubble nest; a leaf or other floating material should help encourage the male to build one.

The female may be introduced shortly after this. They should start displaying mating signs, but if you see any signs of over-aggression, then immediately separate them!

If successful, the male will place the eggs into the nest. This process can go on for several hours and the female should be removed as soon as it’s over.

The male will continue to monitor the nest for the next day or so. The eggs will slowly begin to hatch, but won’t become fully free-swimming until a couple of days after that, at which point, the male can then also be removed.

These clutches are usually small and only contain about 10-50 eggs. However, some fish have the ability to spawn several hundred eggs at a time.

Raising the fry

Raising betta fish fry is expensive, time-consuming, and takes up a lot of space. Remember that each one of those babies will turn into a full-size fish with all of the betta personality.

Once the fry have fully hatched, it’s time to feed them. You will want to give them high-quality food that is easily digestible. Once they’ve grown to a decent size, you will want to perform daily water changes. As they continue to grow, you may need to upgrade the tank to keep up with their demands.

After three months, they will need to be housed in their own 0.5-1.0 gallon (1.9-3.8 L) containers. At this point, you can begin to look into selling them or giving them to other hobbyists. Otherwise, you will need to provide more permanent housing.

Other Ways to Keep Your Male and Female Bettas Together

can you put a male and female betta fish together

There aren’t many ways that you can successfully keep a male and female betta together in the same tank. The only real way to achieve this without ending up with dead fish is by using tank dividers, but even that comes with some controversy.

Divided Tanks

If deciding to split your tank up into separate sections for your male and female bettas, then you need to make sure that your fish tank is large enough size to give each betta fish at least 5 gallons (18.9 L) of swimming space.

This means that a 10-gallon (37.9 L) is the absolute minimum for keeping more than one betta fish.

In general, many hobbyists don’t like divided tanks because they create uneven flow and heating in the aquarium.

Not only this, but the fish are also still able to see and smell each other, which can still create aggression between the fish, leading to unpredictable behavior and even injury.

Betta fish are able to find their mate mainly due to scent and pheromones that lead them to each other. Even if you make it so that the fish can’t see each other past the divider, there is still the chance that they will smell the other betta fish that is ready to mate, which can cause problems.

Egg-Bound Bettas

If this happens, the female can become egg-bound. This means that your female betta has produced eggs and carries them around in her abdomen, waiting for a male to fertilize them.

As a result, the abdomen can become painfully bloated and swollen; the eggs will either need to be released or absorbed back into the body.

Hobbyists are split about using tank dividers to remedy egg-bound female bettas. Some believe that seeing a male betta will influence the female to drop her eggs, while others think Epsom salt baths and time can do just the same.

In order to help prevent your fish from sensing each other, it might be best to have two completely separated sides of the fish tank, each with its own filtration and heater so that water temperature and flow can be regulated. This way, there is even less chance of disease being transmitted.

What If Your Male and Female Betta Don’t Get Along?

If you’re fortunate enough to notice signs of aggression between your male and female betta before it turns into a bloodbath, then you should separate them immediately.

It’s best to give them both their own separate tank so they have personal space to recover and calm down. From there, it is probably still best to keep them away from other fish entirely or to cautiously introduce more betta-compatible tank mates when enough time has passed.

As a last resort, you may rehome the betta to someone with an appropriately-sized aquarium.

How to Introduce Female & Male Bettas Together

Introduce the Female to the Breeding Tank

If you’re planning to breed your fish, it’s important to introduce the female into the breeding tank before adding the male. This will help to reduce aggression and allow the female to establish a territory.

Also, it’s a good idea to add some plants or other decorations to the tank to help the female feel more comfortable. If everything goes well, the female will settle into the tank and start to establish a territory. Once the female is comfortable, you can then add the male to the tank.

Introduce Male Betta to Female

You have two choices here: use a vase with an open top (make sure your breeding tank’s water line is below the vase’s rim), or place a divider in the tank.

Using an Open-Top Vase

If you’re using a vase, place the female in the vase and add just enough water to cover her. Next, gently lower the male into the breeding tank. Make sure that there is plenty of plants or other decorations in the tank for the female to hide in if she feels threatened.

Using a Tank Divider

Add the male to the side opposite the female. Give him some time to explore and get used to his new surroundings. Through the transparent divider, the fish will be able to see each other but they won’t reach each other.

Once the male starts to notice the female, he will be a deeper hue and begin to show off his fins, flare, and generally flaunt himself in order to entice the female.

At this point, the male will nip at the divider to get to the female if he’s interested in courting her. If she is indeed interested, then her color will darken and show vertical stripes (known as ‘barring’) down her midsection, signifying that she is ready to breed.

Also, her ovipositor will be visible as a small white speck between her ventral fins, and she’ll wag her entire body. A cheeky female might flaunt back at him by arching her back and wagging her tail.

Watch the Male Building Bubble Nest

About an hour after your male and female bettas first meet, you should notice the male start to build a bubble nest.

He’ll spend time darting back and forth between building the nest and showing off to the female. At this point, leave them separated overnight.

Remove the Tank Divider

The next morning, the male should have completed his bubble nest. If not, give him a few more hours. Once the nest is finished, you can remove the divider between them and let them be together in their tank.

At this point, it’s normal for the male to become much more aggressive toward the female and chase her around. However, as long as he isn’t nipping at her fins or chasing her to the point of exhaustion, this behavior is perfectly normal.

Also, the female will likely hide a lot during this time as the male tries to court her. Again, provided she isn’t cowering in fear all the time and can still come out to eat, this is normal behavior.

Eventually, the female will allow the male to wrap his body around hers in what’s known as a “spawning embrace.” Afterward, the eggs will begin to fall and the male will scoop them up in his mouth and spit them into the bubble nest.

How Can I Get a Male Betta to Socialize with My Female Betta Group?

A sorority of female bettas is much more peaceful and social than a group of males, but that doesn’t mean you can’t have both genders in the same tank. In fact, it can be quite fun to watch the dynamics between the two sexes.

To have both male and female bettas in the same tank, add a male betta to a tank that already has a pre-established sorority rather than the other way around. Before adding your male betta to the tank, remove any existing betta sorority.

After rearranging items and reordering the layout of your aquarium, it’s important to reset any territorial claims by the fish living there. Afterward, you can slowly and carefully introduce your male betta to the tank before adding any females.

When first adding your male betta to the tank, he may show aggression during the initial meeting. However, this should dissipate after a few moments have passed. In time, your betta will grow accustomed to the other fish’s presence in its home.

Also, if you introduce a male betta to a tank with female bettas, the females can become aggressive toward each other as they compete for dominance. Male bettas usually mate with the most dominant female in a group, so this can lead to fighting among the females as they try to take on this role.


While there is no right or wrong answer for if you can keep male betta fish and female betta fish together, if you have any doubts, then it’s better to keep them separate.

If planning on attempting a female sorority, make sure that the tank size allows for dense vegetation for your fish to hide and escape to; it should also be noted that it’s believed betta siblings get along better in these familial settings.

If planning on setting up a split tank for your male and female betta, then also make sure each side of the aquarium is an appropriate size. It may be better to create totally separate systems within the aquarium to prevent over-aggression and the possibility of your female becoming egg-bound.

If you have any questions about female bettas, male bettas, keeping male and female bettas together, or have had success keeping this difficult male-female pair together, don’t hesitate to leave a comment below!

Sharing is caring!

Leave a Comment

Your email address will not be published. Required fields are marked *