How Many Betta Fish Can Be in a Tank? Capacity, Compatibility, and Safe Tank Mates
Betta fish should be kept alone. A 10-gallon tank suits one male betta. You can keep 3-5 female bettas in groups of odd numbers to ease dominance issues. In a tank over 20 gallons, you can add more bettas, but ensure enough hiding places and plants. Avoid aggressive tank mates, like guppies, to maintain harmony. … Read more