How Many Betta Fish Can You Put In A 50-Gallon Tank

How Many Betta Fish Can You Put In A 50-Gallon Tank?

If you’re a fan of betta fish and you’re considering setting up a 50-gallon tank, you might be wondering how many of these vibrant and fascinating fish you can keep in it. Well, the good news is that a 50-gallon tank provides plenty of space for multiple bettas to thrive and live comfortably.

However, there are a few factors to consider before deciding on the number of betta fish to add to your tank.

Factors to Consider

Betta Fish Aggression

One important factor to consider is the aggressive nature of betta fish, especially the males. Male bettas, also known as Siamese fighting fish, are notorious for their territorial behavior.

They will fight each other if placed together in a confined space, resulting in injuries or even death. Therefore, it is important to avoid keeping multiple male bettas in the same tank, regardless of the tank size.

Tank Size and Setup

While a 50-gallon tank is considered spacious for betta fish, it’s still essential to ensure that the tank is appropriately set up and provides sufficient hiding places and territories.

Adding live or artificial plants, rocks, and caves can create hiding spots and boundaries, reducing stress among bettas. It’s always a good idea to mimic their natural habitat as much as possible.

Female Betta Communities

On the other hand, female bettas can coexist in groups, known as sororities. If you decide to have a betta sorority, it’s recommended to have at least four to six female bettas in a 50-gallon tank.

This allows for a more balanced hierarchy among the females and reduces the risk of aggression. Adding more female bettas can further distribute aggression and create a harmonious community.

Bottom-Dwelling Fish

Another option to consider is adding bottom-dwelling fish, such as Corydoras catfish or small loaches, to your 50-gallon tank.

These fish occupy the lower levels of the tank and won’t compete for the same territory as the bettas. They can help create a more diverse and interesting ecosystem within your tank.

Betta Fish Compatibility in a 50-Gallon Tank

Betta FishCompatible
Male BettasNot compatible
Female Bettas4 to 6 in a sorority
Bottom-Dwelling FishCorydoras catfish, small loaches, etc.

Recommended Tank Mates for Betta Fish

Fish SpeciesCompatibility
Corydoras CatfishCompatible
Pygmy GouramiCompatible
Neon TetrasCompatible
Harlequin RasborasCompatible
Zebra DaniosCompatible


In summary, a 50-gallon tank provides ample space for betta fish to thrive and live comfortably. However, it is crucial to consider the aggressive nature of male bettas and avoid keeping them together in the same tank.

Female bettas can coexist in a sorority, with at least four to six females recommended for a 50-gallon tank. Adding compatible bottom-dwelling fish can also enhance the diversity and ecosystem of your tank.

Remember, creating a suitable environment and monitoring the behavior of your fish is key to ensuring their well-being and happiness. Happy bettakeeping!