Surprisingly already, I'm in the position were I'm needing to share my lunch with Z.
My unadon (Japanese eel on rice) was greedily demanded after each morsel was sucked and swallowed.
I'd pull off a small piece of the flesh rub it between my fingers checking for tiny bones and then pop it on his tongue. He absolutely loved it and then even a small amount of the rice coated in the sauce.
I was conscientious about having lots of omega 3 foods whilst pregnant and then breastfeeding for his growing brain, its exciting now that I can share it straight from my favourite source, oily fish.