I have a CBS in my 14 gal. nano (yes i know its too small for him, he'll be in my 30 gal. soon!!). He's not aggressive toward my Sexy Dancing Shrimp, but he does make threatening gestures towards my black clowns. What I do know, is that he completely eradicated my slug population. I used to have several dozen of those little guys crawling everywhere, now I do not see any !!! I actually watched him devour one of my big slugs, so I know its him. Coral Banded Shrimp are awsome for bristle worm control, but they do eat anything meaty and small. That includes slugs, snails, small crabs and other small inverts. Keep an eye on him, and make sure he's well fed, and you won't have any problems.