give him a week or so with no food and he should eat frozen.try some bloodworm,small bits of prawns and small bite size pieces of frozen fish.mine wouldnt eat anything so i tryed it with a feeder and bang it was gone.so i knew it was fine.i then left it for a week with no food and put the foods ive said in and it ate no problem.give it time.dats are funny sods with eating.