wow. Number one, Lionfish and moray's are completely marine. There is one species of moray, the socalled freshwater moray, that can live in fresh as a juvinile, but needs brackish as it ages, and total salt as an adult. We really need to know your setup. Also, It's not uncommon for newly purchased marine fish to not eat for weeks. Your fish are all carnivores as well, and don't eat everyday in the wild. Have patience.
