hey is this mating behavior he shakes and whips his tail at her heres a vid of him shaking
[video=youtube;bpsILlQsdyA]http://www.youtube.com/watch?v=bpsILlQsdyA[/video]
Doesnt really loom like it but you will know they are ready to spawn when they drop their tubes and start cleaning a rock/surface.... they will also srtart flaring at each other a lot...
He's trying to court her. It's both a dominance and courtship display. She doesn't appear ready yet but he's letting her know he his. That type of activity can go no for a long time.