I use raw fish like mackeral,tuna, sardines and herring and have used some raw salmon (without illness and I'm fully aware of the problems). They love prawns so I add a small amount of cooked prawns. I also do tinned tuna, sardines, pilchards, mackeral, pink and red salmon and anchovies. Never had a problem. The girls however prefer fishy days to Logan, he will eat it just takes slightly longer to get started. Saturday is usually meat free day so thats when I'd be likely to give fish.