I have a 19 month old baby who is not fussy as such, but eats in tiny quantities.
On a good day, he'll have - half a weetabix with milk,
six bites of pasta and brocolli, vanilla yoghurt,
6 bites of a blueberry muffin,
half a little bowl of chicken casserole with potatoes and carrots.
He used to eat an actual plateful of food, but hasn't done for about 4 months. Still drinks milk though. When he's sick, he won't eat a thing.