Hi everybody! I plan on getting a yellow rose(high fin) goby, with a randall's(candy cane) pistol shrimp this coming winter for my new 10 gallon sea sponge setup. I've assured all compatibility is as desired, however I have heard some mixed opinions on keeping snails and hermits with pistols, so fingers crossed. I have some questions regarding pairing the goby with the pistol. Should both the shrimp and goby be added to the tank at the same time? Should the store that I purchase them from have the two in the same tank? Is there any risk of the two refusing to pair? Anything else you think I should take note of, please let me know.(newbie in the hobby)