about 3 weeks ago i bought 6 bgjds i have them in my 30gal just intill they get bigger, but the problem is 1 of the bgjd grew very fast ,most likely its a male he is about 2.5 inch and my others 5 are way smaller than him he bullys all of them alot every time i feed them he chases them away and i want him to pair up with a female but i also dont want him killin the other should i put him in my 10gal for a couple of weeks ?