I bought a shrimp and goby pair last week that seemed to be doing fine, now the goby has been hanging out on his own and haven’t seen the shrimp and don’t know where he is, is this normal or is my pistol shrimp dead?! I never found a body so
Either can be possible. They can sometimes split up, can get crushed by falling rocks as they borrow,...all kinds of things.
Keep an eye out and listen for the pistols clicking.
Also, they were paired? Not all gobies and pistols will pair up.