What size pond is it you have? 2/4?

I would think that big Stripers would prey on crappie. But they will also go after you adult bluegill and intermediate size bass.

If you have a dock on this pond, try sinking about 10 christmas trees near it in one big pile. This will bring them close and you can have a Saturday afternoon Crappie Rodeo with Friend and a Saturday evening fish fry.

Just my thoughts.