Moray?

I have a 75g reef tank with a protein skimmer, filter socks, and biopelit reactor. I do weekly 5g water changes and I have 6 fish. I was at my local fish store and they had a moray eel. I was wondering if my tank could handle a moray and if it can what species?

Stocklist:
damsel
clownfish
dwarf angelfish
firefish
cleaner wrasse
cardinalfish