Dealing with a predator in a reef

[AngryTriGGer]

So I assume my best option would be to try and catch whatever may be the culprit. As far as the dragonet goes, I know it didn't decimate my pod population as i feed my tank small pellets once a day and the pods come out in huge numbers, even when the mandrin was in there. Like I said, it was fat and I had it about year. Cyanide maybe, don't know what the effects are long term..... but the clicking is there after lights out and i can hear it from other rooms in the house.