Here's my 7 inch dominant male
This is my big male.
When I want to breed JD's I just drop 2 or 3 of my females into his tank and let him choose, then remove the rest.
I've had minimum 15 good broods from him in the last 18 months. He's a stud.
I just can't keep a female in there all the time because he has a tendency of tearing them apart. He'a one mean sob.
Right now I am keeping him with my 9 inch female synspilum. She keeps him in line.