my jewels have just spawned. yes they are excellent parents. They take it in turns to guard and fan the eggs while the other takes a break to eat or swim in the current. To initiate breeding I increased the tempurature of the aquarium slightly, feed plenty of live foods, (blood worm, artemia, river shrimp etc), and weekly water changes and this should put them in tha mood! - I keep my jewels in a mildly brackish tank with specific gravity of about 1.005 (low salinity). good luck.