The only way syno's will spawn is with a host mouth brooder. They swim in while the africans are spawning, grab a few eggs and lay a few. The female gets in such a hurry to save the eggs from the syno she grabs up any eggs around including the syno eggs. The syno eggs hatch before the african eggs and the african eggs become a meal for the syno fry..The female african knows no different and will care for the syno eggs until free swimming and sometimes a few days after that, sucking the fry into her mouth if danger comes to close.