Ok thank you guys. It's been in the tank for almost 3 months now and honesty when I took that pic last night it's only the 2nd time I've seen him in that time frame. The only reason it I asked was because I saw a YouTube video on how they eat living things in the tank that help to clean the sandbed. I just purchased some more snails and I'm going to get some more crabs next time I'm at the lfs. My tank has been running for around 7 months now and it seems to be doing great but my sand started to look a little dirty and wanted to bump up my clean up crew to maybe resolve the issue. I've also cut back on the feeding and I still need to purchase a GFO reactor. Overall the tank is looking great though but I'd like to keep it that way. Thanks again for the help. Next time I head to the sandbar on. The boat I'll take him with me and set him free.