Do you mean Macrobrachium lamarrei lamarrei? I've kept them before. They are very hard to distinguish from Ghost shrimp and other types of glass shrimp. If you accidentally get the wrong kind you can end up with a predator on your hands. But true Macrobrachium lamarrei lamarrei do not have claws and are fairly easy going detritus/algae eaters. They do breed in FW. Not many specific needs. Don't keep them with large fish. Make sure they have algae to eat.