Looking to add a few more livestock to a 55g Tanks been up and running now a good 8 months. Currently have 2 ocellaris clowns, 1 molly, snails and hermit crabs. Have a DSB w/sump complete w/pods and chaeto. Wanting to add a Watchman Goby w/pistol shrimp then maybe later a Coral Beauty. Think I am good but only if I can get them from my LFS...may have to order the shrimp haven't seen him carry any. Would like to watch there symbiotic relationship. Any tips or concerns..comments..