Can Betta Fish Live with Other Fish?

by Angela Vuckovic

Published: June 30th, 2025

panpilai paipa/Shutterstock

Betta fish - also known as Siamese fighting fish - are some of the most striking freshwater fish you can add to an aquarium. With their vibrant colors and flowing fins, they’re a favorite among both beginner and experienced aquarists. But one common question often arises: Can bettas live with other fish?

The short answer is yes, but with caution and planning. While bettas can sometimes be kept with tank mates, their compatibility depends on their temperament, the tank setup, and the types of fish you introduce. Here’s what you need to know.

Understanding Betta Behavior

Male bettas are well-known for their territorial and aggressive nature, especially toward other males or fish that resemble them. This trait has roots in their wild origins, as bettas come from small, isolated waters in Southeast Asia, where males would compete for territory.

Female bettas are typically less aggressive but can still be territorial in cramped spaces. That’s why tank size matters a lot. Small bowls or tanks under 5 gallons (19 liters) are not suitable for any community setup. If you want to try housing a betta with other fish, aim for a tank of at least 10 gallons (around 40 liters) - more space means more territory and fewer conflicts.

Choosing the Right Tank Mates

If you’re considering adding companions for your betta, choose peaceful, non-aggressive species that won’t nip at fins or trigger territorial behavior. Avoid fish with bright colors or long flowing fins that could be mistaken for another betta.

Some good options include:

Corydoras catfish: Gentle bottom dwellers that won’t compete for space.
Kuhli loaches: Shy and mostly active at night, they tend to stay out of the way.
Harlequin rasbora: Calm, schooling fish that keep to themselves.
Neon tetras: Peaceful, though some bettas may still chase them, so monitor closely.
Mystery or nerite snails: Great tank mates that help clean algae and are never seen as threats.
Amano or ghost shrimp: Can coexist with bettas in large, well-planted tanks.

Introduce new tank mates gradually and monitor all interactions, especially in the first few days. Be prepared to separate the fish if tension arises.

Species to Avoid

Some fish simply don’t mix well with bettas. Avoid:

Tiger barbs: Known for fin-nipping.
Guppies: Their bright colors and flashy tails often trigger aggression.
Other bettas: Male bettas especially should never be kept together.
Gouramis: Too similar in appearance and temperament.

Also, steer clear of overcrowding, as this increases stress and reduces water quality - two things that can trigger aggression or illness.

Creating a Peaceful Environment

A well-decorated tank can reduce tension. Use plants, caves, and ornaments to create hiding spots and break lines of sight, which helps minimize territorial disputes. Live plants are especially helpful - they improve water quality and create a more natural setting.

Keep the water temperature stable at 76–80°F (24–27°C), maintain good filtration, and avoid strong currents. Bettas prefer calm water and will struggle with filters that create too much flow.

The Bottom Line

Bettas may have a reputation for aggression, but with the right setup, compatible tank mates, and careful monitoring, they can live peacefully in a community tank.

Always pay close attention to behavior - if aggression starts, be ready to make changes. With a thoughtful approach, your betta can be a beautiful and harmonious addition to a shared aquarium.

Angela Vuckovic

A proud mama to seven dogs and ten cats, Angela spends her days writing for her fellow pet parents and pampering her furballs, all of whom are rescues. When she's not gushing over her adorable cats or playing with her dogs, she can be found curled up with a good fantasy book.

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