Hello all, I have a goby compatibility question for those who may have kept these together. I currently have a Randalls Prawn goby (also called orange stripe goby) in my 90 gallon reef aquarium. He's been in the tank for about 6 months and is doing great, but is still quite shy and skeptical of me. When I walk in to view the tank he immediately retreats to the back area under some rock overhangs. My question, I would really like to add a Yasha Goby to this aquarium, would these two gobies be okay together? Also, side question, I have tried 3 candy cane pistol shrimp and all of them have ended up going through the overflow grates and into my Reef Mat. The overflow basically runs along the entire back of the tank, is there any trick I should know about stopping pistol shrimp from going overboard? Thanks in advance!