I'm not too sure about saltwater shrimp (decently new to the salt hobby) but I have a freshwater Blue Dream shrimp tank and I know that most fish diseases in the freshwater don't carry over as much to inverts/neocaridina, but they do have their own things to look out for. But again, reeftide made a good point, there could be itty bitty little pests along for the ride on him that could be introduced to your tank.