Can you have different color betta in one tank?

Yes, you can have different color bettas in one tank, but it's important to note that bettas are territorial and can be aggressive towards each other regardless of their color. If you choose to keep multiple bettas, it's best to use a larger tank and provide plenty of hiding spots to minimize aggression. Alternatively, you could consider keeping males and females together in a breeding setup, but this requires careful management to prevent fighting. Always monitor their behavior closely to ensure their safety and well-being.