"Joel" wrote in message link.net...
Then it extends its arms and releases 10-15 little mantis shrimp
into the water. This action continues every 20-30 seconds.

This would be very cool to watch... ;-)

I have literally hundreds of
mantis shrimp fry swimming around in the tank and refugium. This is exactly
the opposite of what I was hoping for when I got into the hobby.

Oh really? I am always happy seeing my cleaner shrimps to breed :-)
My tank is full of planktonic larvae every week because of them.

Is here
anything I can do? Is there any demand for mantis babies?

Any plankton eating fish will love you if you let it snack on them.