Goby MIA

[kipsix]

Here's the story....
I had a yellow watchmen goby in my tank for at least 4 weeks. He was paired with a pistol until my Eel (dwarf golden) ate it (the pistol). Then about 2 weeks ago he just up and disappeared.... I was concerned about a dead fish in the tank, so I tore the LR apart to find the dead fish, but turned up nothing.

So we were at the LFS at the GF decided she wanted a new goby and got a yellow headed sleeper. This guy was huge, at least 3" long and thicker than my Eel. He tore the tank up for about 5 days. And now he has gone totally MIA as well?!

It's a 65gal RR, I already checked my sump (found my nudibranch). The tank is almost completely covered to keep the Eel in, but I checked the surrounding floors and can't find it. It's pretty much all softies and the parameters all seem fine and the corals all seem happy.

So my question is....
Can CUC eat a full size goby??
Fish don't just disappear do they?