it just depends on your shrimp. many people have both that are fine, however many people also have cbs, and whenever they try to introduce a new one its killed. buy your ticket take your chances, adn good luck
jon
it wouldnt hurt. what size tank do you have? if its a large tank and the cbs usually hangs around one area, tryintroducing the peps to the opposite area, they will at least have a better shot!
good luck
jon
I had a cbs in my 80gl with a cleaner. The cbs was very small at first, but when he got bigger he shredded the cleaner and started to get mean with my hermits.