Clownfish breeding info

I have a pair of Picasso clowns that are bonded not sure of they have ever spawned because I just got them but according to the person I bought them from they have been together a long time. They are both 3.5-4" long



I want to see of I can breed them but need to do a lot of research and am wondering if anyone has some solid links that explains the process of doing this. I have done some looking on google myself but you never know what you could be missing.