Bought one of these guys from Divers Den. He seems to spit out most foods I offer. He seems to only like frozen Brine, and reef nutrition Roe. Spits out pellets and other offerings. Any suggestions? He's in a Nuvo 40 with a Bi-Color Angel, Percula Clown, Bangaii Cardinal, Bartletts Anthias, and a Japanese Pygmy Wasp Fish