Can you keep female bettas together?

Short answer

Yes, female bettas (Siamese fighting fish) can sometimes be kept together in a group called a sorority. It is not guaranteed to work and is more advanced than keeping a single betta. Many hobbyists avoid it.

What you need

• Tank size: At least 20 gallons, ideally 30+ for a group of 5–6 females. More space reduces aggression.
• Group size: Odd numbers (5, 7) spread aggression so no single fish is targeted. Fewer than 5 can lead to one-on-one bullying.
• Hiding spots: Lots of plants, caves, and line-of-sight breaks. Each fish needs places to retreat.
• Add all at once: Introduce females together so no one establishes territory first.

Risks

Female bettas can still fight. Fins can be nipped, stress can cause illness, and some tanks never settle. You need a backup plan: a spare tank or ability to rehome an aggressive fish.

When to avoid

Skip sororities if you have a small tank, limited experience, or no backup. A single betta in a 5–10 gallon tank is simpler and often happier. See our betta care guide for solo care.

Quick takeaway

Female bettas can live together in a large, well-planned sorority with plenty of cover and an odd group size. It is not beginner-friendly. If in doubt, keep one betta per tank.