I used a critter keeper to introduce my female clown to the male I wanted to pair with her. I ran him through quarantine, then caught her out of my reef, put her into the critter keeper, and put it into the tank with him. The second day I decided to let her out at feeding time, I had a net ready if needed, she swam out of the keeper, he swam to her side, and they both turned to feed. They accepted each other, and their roles immediately, probably because she was 3in+ and he was 1in so there was no doubt who was dominant.