Thai Micro Crabs W/cpo's

[tnfishlady]

I am getting a pair of CPO's plus 2 Thai Micro Crabs (I think that's what they are called). Can they be kept together? I'm thinking of using a 20 gallon as a home for one or both "sets"

What are anyone's experience with keeping either of these with breeding colonies of dwarf shrimp?

Thanks for any input.