Glad to know I'm not the only one who has to do this!

I get really scared when I can't see the two of them at first sight. Although my tank is all sealed up, and I only ever open the tank when I know where both are, It's still a really horrible feeling. I know all of the hiding spots now, and one tends to hide a lot more than the other (which makes me think that it is female).

But yesterday I had a look, and found that one was at the top, 5 min later I check again and it is nowhere to be seen (it was near where the misting pip goes in, through a hole, being one of the few possible exits in the tank, even though it is always covered/sealed). So I started to look everywhere, and after about 30min, it was in a place I've never seen it before, a complete blindspot from all angels except for birds-eye.

Anyway, they can be so tricky to spot at times!