Bit difficult to choose, as its different for each tank and each set of fish.
Main tank, Usually 3 times a day, sometimes only twice a day, never miss a day. They get pellets, flakes, crisps everyday, every other day, bloodworms, shrimp, prawn, tubiflex and occassionally algae wafers, every three days, veg.
Coldwater tank, flakes and pellets, twice a day, the odd frozen bloodworm, brineshrimp.
Frog/shrimp/snail tank, frozen bloodworm every two days, algae wafers on the days in between.
Breeding tank, 3 x a day at present for the fry, twice a day for the adults.
So I havent actually picked any of the choices, but have given my answer.