I have always been interested in pistol shrimp. I have a diamond goby now who does a great job at cleaning my sand. Here are my concerns if I get a pistol. What are the odds it will pair with my diamond? If it does pair, will my goby still venture and clean the sand? What are the dangers to me/other inverts of owning a pistol shrimp (can i have other shrimp, crabs?) How loud is the click and how often (roughly)? Thanks for your input.