What is the best fish to put in a tank with a betta?

Check out our complete article on cory catfish for the specifics. Corydoras are one of the most popular community fish because they’re so happy-go-lucky, easy to breed, and helpful as a clean-up crew. All of these animals are peaceful and easy to get along with, making them the ideal tank mates for a betta fish.

Can you mix any fish with a betta?

Betta fish are naturally territorial and should not be housed with any other betta fish because they will fight and injure each other, often resulting in death.