Another tip for these shrimp:
Get the water right and stable before you add the shrimp - will lessen the chance of stressing them out. Mine got really stressed, shed their exoskeletons and are now in hiding. When they shed and are stressed, they are at their most vulnerable, so they could die. It is best to do frequent small water changes at this stage, like 10% a day or every other day. The shrimp will then only pop out occasionally until a couple of weeks have passed and they have grown new shells.
It is really best not to have them in a tank with other fish. Not until you have built a strong colony anyway and can afford some losses.