CRS and CBS are caridina, blue bees are para caridina. Neo caridina and caridina do not cross breed. So I think para caidina and caridina don't either but I am not sure. I have all three types but never put the blue bees with bee shrimp, only with RCS and for a short time with Sulawesi cardinal shrimp and they did not cross breed with those. But blue bees are very shy and can be outcompeted for food. It worked ok with the cardinal shrimp as they are just as shy but the RCS pushed them out of the way to get to the food. I ended up removing the RCS because of that.