Well the video of the Tilapia on his nest came out better than I thought, so I am adding a link to it here.
I have found several beds like this, and I have seen more than five Tilapia on them. It is funny to see them on the beds, any time there is a larger intruder, they leave the nest, swim a racetrack, and then return to see if the nest is clear.
Also, in this video, when the Tilapia leaves, I counted over 15 small Bluegill studying the nest and camera.
Enjoy!
Brian
The one thing is the one thing A dry fly catches no fish Try not to be THAT 10%