Aw, I like the way you set up the fry box! So, there were no fry left in the pod at all? I think that if the fry were still alive the parents, well the mother especially, would have been with them constantly. If she was swimming about in the tank away from the pod and allowed you to take it so easily, then I think you can assume there were no fry left as they very rarely let them out of their sight for more than a few seconds!
Also, if they had spotted any fry in that fry box they would have been trying to get at them, for sure! (which is why I recommended putting a little gravel in the bottom of it so that when they look upwards they can't see what's in the box).
Well, I'm hoping you managed to find even a couple of fry...but if not, don't be too sad because they will spawn again very soon and next time you will know to remove a few fry by about day 3 or 4. So your fry box won't have been a waste of money.
Next time you see the female with her orangey/pink tummy, try feeding her with some good quality live foods or frozen as that encourages a larger, healthier batch of eggs/fry.
Now that's funny you saying your convicts look like a 50 cent piece - I've always thought my short-bodied convicts were like a 50p piece LOL. Strange - the way you describe them is almost like they are short-bodied convicts. Wow - well, I've never seen the stripey ones in short-bodied form before and I couldn't find anything about dwarf convicts online other than the pink variety that I have.
Perhaps you should post a query in this forum asking if anyone else has had, or heard of, standard looking grey/black convicts in short-bodied/dwarf form?
Like I mentioned in my PM, I originally thought short-bodied convicts were hybrids of convict/parrot fish (maybe some strains are and maybe these are the ones that are infertile?) - but then I read various things online that say the real short-bodied convicts are just missing a particular growth gene - so they could come from normal size parents or have normal size siblings but just end up short due to this genetic disorder. I wonder if that is a bit like dwarfism in humans then?
Oh well - whatever makes them like it, I just adore them!
Are both your convicts of the same colouring?
Athena