Not in Hawaii but if there's more info the members here may be able to help.
What are your parameters?
What susbtrate?
What is your source water? (parameters?)
Where did the shrimp come from? (if breeder/hobbyist, what are their parameters?)
CRS tend to be pickier shrimp and may require more specific parameters than RCS do in order to successfully breed. It's hit or miss how well they'll do in a tank together if you gear the tank towards one species or the other... unless you have them in separate tanks geared towards different parameters?