So I have a watchman goby and pistol shrimp in my 75 gallon and added sand to the tank trying to avoid where they hang out. Turns out I got sand in their area. I lifted the rock where they hang out but didn't see either one of them and moved the sand from that area. I didn't see either of them but I'm pretty sure I see a whole. Can the goby dig out of sand? Or did I just kill my first fish. ... :(
