Rainbow Boesemans spawning?

Sorry, I have still not been able to post pictures of my tank. I am still experiencing some problems with my blogger account.

A weird thing happened last night. I had 3 rainbow boesemans at around 5PM but at 8PM one of them was dead. He was doing just fine the whole day! When I checked the other rainbow boesemans for disease, I noticed that the female had little silver balls coming from ther anus. At first I thought it was a problem with her digestive system, but on closer inspection I became convinced that they must be eggs! The next morning (this morning), I saw that the string of "little silver balls" (eggs) became longer.

Have any of you successfully breeded these fish?

Cheers.