Okay, before we start with your jewels. We need to de- stock your tank. You tank is only 26 us gallons. You have waaayyy to many fish in there. You need to get rid of those severums, they need alteast a 55 gallon tank, around 225 litres. I would also get rid of the Plec, as he needs at minnimium, 55g ( 225 litres0< but even then that can be too small for him, assuming he is a common plec. What kind is he? Also, a pleco would be more than happy to eat any fishes eggs and fry. Plus, you have both a pair of Kribensis and Jewels in there? I would not suggest that what so ever. Jewels are slighly more aggressive than Kribs and would not be nice to them if they can get a brood of babies to lice. Plus, that is in my oppinion, and probably others as well, to small for both species. Plus, that firemouth shouldnt be in there either. They are from 2 different continents, and firemouths are less agrresive than both Kribs and Jewels and firemouths get bigger, needing a larger tank. Now assuming you only have those Jewels in that tank, where they can properly raise there young, would greatly increase the chance of them not eating them. As if there is room in the tank, the babeis have somewhere to go. Also, it can take many times for a pair to learn to take care of thier young. Mine are on there second try and have 100's of babies everywhere, and are taking great care of them. I once had a pair of Convict Cichlids( from South America) and they took good care and rasied there babies on their first try, and didnt have to rasie again. I only spawned them once, as they were such good paretns, i didnt have room for more babies.