My preferred feeding regime is food twice per day, as much as they can completely finish in 30 seconds and one day per week without food. As for type: "live" foods 1-3 times per week, veggies 1-2 times per week and the rest of the time one of about 10 types of dry food I have. I find that giving a variety of different dry foods, as opposed to only one type of dry food, is as beneficial (or even more so) than feeding live foods.