Thank you guys,
I`ve got these animals since February 2003, they are probably wild caught, bought in pet shop. I keep them fully aquatic in 100l heavily grown tank. Temperatures are 22-26 °C summer, 15-17°C winter. Food: mostly nightcrawlers during the summer and tubi or frozen blood worms in winter.
The male got his breeding dress and started tail fanning within October and the female started to lay in December. First few eggs were not fertilized.
She has laid over 50 eggs up to now. Three of them are hatched now. First embryo hatched in 36 days pretty vestigial and died soon. Second seem vestigial too, still alive, third seem to be o.k.