Unexplained deaths

[Android raptor]

I looked in my unnamed tank of hissers tonight and found a young female dead! This has happened to me once before, but that was at least 6 months ago. I know for a fact they were both young, because I got them as nymphs about a year ago. They were adults when they died, and had food and water available so I'm a bit worried now. Any idea what's happening? Or are occasional, unexplained deaths normal in fairly sizable colonies?

 

[Matt K]

I looked in my unnamed tank of hissers tonight and found a young female dead! This has happened to me once before, but that was at least 6 months ago. I know for a fact they were both young, because I got them as nymphs about a year ago. They were adults when they died, and had food and water available so I'm a bit worried now. Any idea what's happening? Or are occasional, unexplained deaths normal in fairly sizable colonies?

How many live in the colony at a guess, and what size of container ??

 

[Allpet Roaches]

An unexplained death here or there is normal. Of course if they start dropping like flies there's a cause.