betta fishes

so i think it needs repeating:

FEMALE BETTA FISH CAN NOT BE HOUSED TOGETHER

sororities are expensive, time-consuming, stressful, and are rarely successful (and that typically requires the fish-owner separating the aggressive ones out into their own filtered and heated tank, requiring more money and space). 

especially if you are just a casual hobbyist, DO NOT ATTEMPT A FEMALE BETTA FISH SORORITY