Harvey,
long nose hawk fish are reef safe unlike other hawkfish. Mine longnose was in my big reef tank, with crabs, shrimps, lobster, snails and other inverts and never touched a thing. There mouth is not big and no teeth to crack them open. Mine also like would do powerhhead surfing. It kept doing it so it looked fun.
But I found mine was always visual, never hide, like some of the angels. If the longnose was not swimming it was perching proud on the highest rock.
