i have my male with 3 females all the time, and he never really bothers them. the male is 4 5/8" and the females range in size from 4 1/2"-5 1/8" my guess is none of them are sexually mature. they are all wild caught, i have read that there are some ways to encourage matting behavior, like keeping them well fed for the first year them kinda tapering them off for a few months during the winter, also they have to be old enough, wich if your male is 10yrs old he probably is but the female may not be.