To prevent predation, stock crappie that are longer than 1/3 the length of the largest LMB present...

If you were going to stock a pond just for hybrid crappies, I would stock HSB as the predator so I could closely control their numbers and sizes and utilize GSH and TFS in larger ponds as forage.

I would be interested to see where the hybrids fall in comparison to their parental species in their utilization of invertebrates in their diet...