Tradeing a CBS for a Sally light foot? Nothing like throwing in a spider to eat the fly...
They make traps for nuisance shrimp and crabs. Invest in one, and youll be surprised at what you catch. Addind a Coral Banded Shrimp will only make the problem worse, as they tend to be even more predatory than a sally light foot, and then youll have 2 carniverous predators that leave each other plenty or room.