Crappie can't catch them, they are WAY too fast.
Seriously I watched GSH in captivity and as I release them and I seriously wondered if there were some forage fish that simply out run the predator. The GSH both in speed of movement and ability change direction out paced the FHM 2-1. I wonder if any underwater data shows ability of GSH or other more stout shiners or shad outrunning panfish predators?
I imagine some like LMB maybe rely on ambush?