Betta fish in the aquarium are really attractive. However, there are some ground rules to obey, as they can get you into problems if you’re not careful.
Everything you need to know about mixing betta fish in a tank is right here.
Let’s begin with one of the most often asked questions:
Is it possible for male and female Betta fish to coexist?
Let’s begin by considering all of the various betta fish combinations in your tank:
- Males + Females
- Male + Male
- Female + Female
Can Males & Females Live Together?

It’s not always a bad idea to start with one male and one female fish. You should not see any fights as a result of this.
Other times, the two fish will begin battling from the beginning. They could possibly wait till they reproduce before starting to fight each other.
So with betta fish, you never know. Because they are a territorial species, it’s best to introduce new fish carefully and keep a watch on what’s going on.
It’s usually not a good idea to combine men and females for an extended period of time.
If you want to breed the fish, do so for a brief period of time and then separate them again.
However, prior to doing so, you should have some knowledge of fish breeding. This is due to the fact that betta fish are a unique breed that requires more attention than other fish.
They’ll probably start breathing after a while, and you’ll need to know how to care for them throughout this time, as well as when the offspring arrives.
Can A Female Betta Kill A Male?
In most cases, the betta female will not kill the male. They usually get along well, but because they are an aggressive species, the male may surprise you by assaulting the female.
The best way to do this is to introduce a fish from a nearby tank. They can view each other but not touch each other in this separate tank, which can be within or outside the aquarium.
In this manner, you can see how they interact with one another and give them some time to learn how to work together.
If all goes well, you can remove the new fish from its separate tank and introduce it to the rest of the aquarium’s inhabitants.
They are not your typical aquarium fish, and if you are just getting started, you should stick to a simpler breed. Here are some of the most straightforward fish to begin with:
- Guppies
- Neon Tetra
- Mollies
- Zebra Danios
- Goldfish
- Swordtails
- Killifish
- Rainbowfish
- Oscar
- Angelfish
You’ll probably have a lot more fun if you start with one of these species because they’re easier to work with and more tolerant of one another. However, before mixing different species in your tank, always verify with your pet store.
Can Two Males Live Together?
It’s not a good idea to keep two male betta fish in the same aquarium. They can grow extremely violent, and they will usually begin fighting one another until only one of them survives.
As a result, you must exercise extreme caution and ensure that you understand exactly what you’re working with.
You might not notice it at first, but they’ll start fighting each other after a while, and it won’t be nice. So here’s the first rule to keep in mind:
“Never put two male betta fish in the same tank (alone).”
If you wish to have two males in the same tank with a few females, you should do it with a few females. This can help to level the playing field and prevent males from hunting and killing each other.
We’ve observed multiple instances when this has worked perfectly.
Another helpful suggestion is to have bettas of diverse hues so that they blend in better. Betta fish come in a wide range of hues, as you may be aware.
It is unknown why they are more sociable to other bettas when they have different hues. It’s presumably because if they don’t look the same, they don’t regard each other as a direct rival. But who knows, they are a unique species of fish that would not be as popular as aquarium fish if it weren’t for their stunning fins and coloring.
Can Two Females Live Together?
So, how about the females? Are they more sociable and capable of peaceful coexistence? Females are better at sticking together in the aquarium than males.
However, you must exercise caution here since if you are not careful, you may cause problems.
It’s important to note that you shouldn’t add another female betta fish to an already established group.
If you wish to introduce extra betta fish to your aquarium, do so in groups of two or more (or more).
This is due to the fact that existing females in the aquarium might become highly territorial and will want to defend their territory.
So, by introducing numerous new fish at the same time, you’ll shake up the established group dynamics, and they’ll get along a lot better.
3 tips to increase the odds of success…
To keep betta fish, you’ll need a lot of water, as we’ll go over below. That’s the first thing you should keep in mind if you want to maximize your chances of success.
Inside the aquarium, you’ll also need to design a lot of hiding spots with plants and other stuff.
Bettas prefer the ability to hide from time to time. They require personal space and time away from the other fish in the aquarium from time to time.
They should be able to conceal from one other and avoid having constant “eye contact.”
The final point we’ll discuss here is introducing new fish at night. The idea is to do it in the dark since the other fish will be more interested in their surroundings than the new child in town. When the room is dark, the fish are more likely to focus on items outside the aquarium than on each other.
This provides the new fish a better chance to mix in with the rest of the group.
How Many Betta Fish Can Live Together?
You may have a lot of betta fish in the same tank if you introduce the new fish to the current flock in pairs. Females are perhaps the best candidates because they can learn to live together.
However, you should be aware that betta fish use far more water in your aquarium than other species.
Otherwise, you’ll stress them out to the point where they’ll start fighting.
When it comes to how much water you need in your betta fish tank, here are some general guidelines to follow:
- 1 betta fish: 10 gallons
- 2 betta fish: 15 gallons
- 3 betta fish: 20 gallons
- 4 betta fish: 25 gallons
- 5 betta fish: 30 gallons
- etc.
You should be able to create a serene environment for your betta if you follow this rule.
Also, when introducing new fish, always utilize the adjacent tank. You’ll be able to observe how they act in the flock when you introduce the new fish this way.
As previously stated, adding a lot of flowers and other items to the aquarium is a fantastic idea. This allows the bettas to conceal from one another, which is essential for them to get along.
It’s also possible that you’ll feel the water’s temperature. If you raise the temperature a little, they will sometimes behave better.
You can start with a temperature of 88°F (31°C) or even go a bit higher. That’s about 3 degrees hotter than we generally recommend for an aquarium. Bettas, unlike many other breeds, like warmer water for whatever reason.
They’re also a rare species that like to live in warm water.
Can Betta Fish Live With Other Fish?
Betta fish can be kept in the same aquarium as other aquarium fish. The most effective method is to use a betta fish as the final species.
You should avoid having any slow-moving long-tailed fish in your aquarium since the Bettas will attack and bite them.
You’ll need another fish tank to be able to remove the bettas if they’re misbehaving. There’s always the possibility that they’ll start fighting each other or the other fish.
With the Bettas, you can never be really certain. Even if you follow all of the proper procedures, they may suddenly begin assaulting each other because something has stressed them out or they feel like it.
As I previously stated, the betta fish breed is not an easy one to get started with. To learn how to run the aquarium, you should surely start with a simpler breed.
You can introduce the bettas as you gain more experience, but only after you’ve established a good and welcoming environment with a good cycle.
Also, keep in mind that these fish require a lot of water. If your aquarium was created for another fish species, you may not have enough room to accommodate the bettas.