Originally Posted by finnfinnfriend
Why would you want to stop a female's growth?
My newest breeding males are a bit small right now, and in order to breed them at some point, they need to catch up to the female a good ways. If I allow the female to keep growing, the males most likely won't have a chance to catch up, therefor I cannot breed them until they are quite older. My females are a bit aggressive and pick on the males smaller than they are.
Bettas will grow in tanks half a gallon and up - therefore need smaller than half a gallon to stop their growth.
I wouldn't do that for a pet betta, but for breeding purposes, that is my only option if I want to use those females (which I do).