they did it, but male kicked eggs out again. you can see my solution in the picture below:

I hoped that fungus won't "catch" them, they are in the same aquarium where water is not so soft, unfortunately...
but... fungus did it again, I lost most of eggs, but there were 14 wrigglers left.
hope to raise them successfully, hard part is beginning.



now there are 11 of them, looking pretty healthy

and one pic from few moments ago, they started to changing color:

advice, suggestions about feeding and keeping them alive in next stage(s) are always welcome! ;)