Hi! I have two watchmen gobies. I bought a tank and they were living in it. I don’t have much information on the history of the gobies but one day one of them went missing. Really sad I thought it died and looked for it and I could not find it. It’s been several days. The one that was left had been swimming around moving sand like normal. Then tonight the other gobie is ALIVE! Apparently it was buried? It came out for a bit and now the little cave is closed again and I cannot find the other goby. Is this normal? Has anyone else had this happen? Maybe they have eggs? I don’t understand what’s going on.