I don't think it's a good idea to mix cherry shrimp and crystal red shrimp. They both prefer totally different water parameters. One of the species will not be happy and will not breed as readily.
I have cherry shrimp and I found another shrimp species (green shrimp) that also like the same hard water as the cherries like.
I have cherry shrimp and I found another shrimp species (green shrimp) that also like the same hard water as the cherries like.