Hi darkstar,
You can try mysis soaped with Seachem Entice. My Moorish started to eat mysis after the day 2 , now start to take some pellet soaped with Entice . It has with me for 3 week liao, whenever my hand go near to the tank , the moorish will swim over and they eat like a pig.
BTW, i've my 2 moorish in the 3 ft tanks, they swim alot and never stop unless the lighting is off.
My new house is coming soon, so I plan to setup a new tank just to keep 4 ~6 Moorish after i've swifted in(Estimated 5 month later). Hopefully, by then i can manage to cope it.