Clown fish spawning solo

[Reef Pilot]

Short clip of my Cinnamon Clown with her spawn on the back glass. There is no male in the tank. She has done this many times before, usually on a rock amongst some corals. The eggs only last a few hours, though, without being fertilized. But she guards them vigorously during that time. In the video, you can see her giving me the evil eye.
http://youtu.be/SSC0KdaA5wk