Brine shrimp are nutritionally deficit (they ain't got none). Mysis shrimp would be one way to substitute, but they're a bit like mandarins in that they do best in old, established reef systems (especially those with refugia) because of all the different "pod" growth (cope, iso, arthro, and so on).
not being truthfull!?!?!? mine eats everykind of frozen food i give it and pelets. he a real champ i've had him for years with no problems. i did have my reef up and running for 2 years before i got him but he eats everything i put in for the other fish.