They have done well in my pond. They in my opinion won’t venture far from shore to eat many eggs, they live in inches of water in my pond due to predators. Throw few sticks along shoreline and more than likely they will survive. Not sure the BCP will go that shallow to eat them. If your pond is fertile the crappie will thrive in open water with all the critters that a good bloom will bring. The CC will eat the BCP out in open water so you may have to give the BCP a head start. I also added FHM and golden shiners