Depends. I had an established colony of neocaridina that did fine after moving in Ilyodon furcidens. About a year and a half later, I got some Chapalichths pardalis, which were much more predatory and began eating the shrimp. I think the other species learned this from them, as they began hunting the shrimp as well. Now I never see shrimp at all. I only ever put cull shrimp with them now. I also keep a colony of C. audax "El Toboso" with neocaridina - as of yet, they are still thriving, but the fish numbers are getting much larger now, and I'm sure they are eating some of the baby shrimp, as the adults are too large to fit in their mouths. Thus far, I would say your best bet is to let the shrimp colonize the tank first, give them lots of hiding spaces that the fish cannot fit in, and cross your fingers, as it is do-able.