What kind of fish if any can you combine with a beta couple in 10 gallon tank?

It's generally not recommended to combine bettas with other fish in a 10-gallon tank. Here's why:

* Betta's temperament: Bettas are known for their aggressive nature, especially towards other males. While a female betta might tolerate a male in a larger tank, a 10-gallon is too small for a breeding pair.

* Limited space: A 10-gallon tank is already on the smaller side for a single betta. Adding other fish will increase stress levels for all inhabitants, leading to aggression and potential health issues.

Alternatives:

* Focus on a single betta: A 10-gallon tank is perfect for a single betta. You can create a beautiful and enriching environment with plants, hiding spots, and decorations.

* Consider a larger tank: If you want a community tank with other fish, you'll need a significantly larger tank (at least 20 gallons for a small community).

Important Note: Even with larger tanks, careful research is essential before adding any fish to a community tank. Consider their temperament, size, and compatibility.

In conclusion: While it's tempting to create a community tank, a 10-gallon is too small for a betta couple and other fish. Focus on creating a thriving environment for a single betta in your 10-gallon tank.