"Breeding has been observed during the daytime with all individuals climbing up to high points on the live rock and simultaneously releasing their eggs and sperm into the water. "

I've seen them doing this in our tank...it's pretty trippy - they kind of raise the front portion of their body up (much like a horse rearing up on it's hind legs) and spew the eggs and sperm out into the water currents. It's actually quite a lot for such a small critter, and I'm sure the filter feeders get a good meal as a result. I like them because they are good cleaners, and stay relatively small (they don't knock frags over like some of our larger clean up critters).

W.