I've tried everything food wise. Fresh clams,mussels,oysters,scallops,frozen shrimp and fiddler crabs(the shrimp and crabs he was eating prior) one day he just stopped eating
Had a couple ocos over the years myself. as cool as it gets really. sorry if i missed this somewhere but have you considered adding a small fish or two. My octos would eat a small damsel any time i put one in lol