4 clownfish same tank wile breeding!!

[gg1111]

thought it was a cool thing to show off. http://www.youtube.com/watch?v=m5ThXVYKAz4 (clownfish breeding quartet) She is in there with three other clowns and she doesn't kill any of them(while spawning). My female onyx did not like a three year old onyx male or a two year old Picasso male.(the Picasso male and onyx male paired up). so I got here a juvi Picasso and nothing was happening,I also put in a juvi onyx much smaller so she would maybe find more attractive the bigger Picasso and nothing happened until I put in a snowonyx smaller than all of them and from day one it paired up went in the pot with her and 5 months later she spawned. my friend alejandro (unicospollos) said to watch out she might start killing off the clowns but I told him she's real calm and won't hurt them, I have had real aggressive females before. what would the percentage be on a trio in a 29 gal biocube or any thing under 100 gal. by the way two clowns per tank!!!