I have a small amount of fry (my guess is 50-100) being guarded by my nannacara anomala female. Not that spectacular youll say but the clue is that my tank water parameters are pH ~7,2, 0° kh and 19°gh with tap water being 14° kh and 880 µS.
From all that ive read the book says its impossible to spawn an Apistogramma like fish on this fluid beton. I wasnt expecting a spawn and i got these fish (2/4) for 1 euro just to take them off the closing lfs guys hands...
Any opinions if this is "common" or heard of before?
Heres some (crappy) pics:
eggs on a piece of wood under a half coconut (need good imagination for that)

one of the other females