So is candy...
I've recently started buying market shrimp for my plecos (first time i've ever bought shrimp, not a fan myself). I just pickup 3-4 shrimp at a time and add 1 a night till they're gone, then get more when I go grocery shopping a few days later. At first I kept the shell on, but now I usually peel them. Otherwise I have to fish out the shells in the morning which I'm usually not thinking about, nor wanting to do, that before work.
So...+1 to Oddball's reply.