Actually hungry? Or just a pig?

My bristlenose pleco and my corys go nuts when I drop algae wafers in the tank at night. They will try to keep each other away from the wafers, pushing each other around, really quite the battle for control. I feed the really small ones usually 2-3 a night to the pleco and 7 corys. Flake and a shrimp pellet or two in the morning. So, which is it hunger, or pigs?!

Yeah, I didn't think they were starving or anything, but I thought I would ask, since I've acquired so many corys! Might have to try that other food too, my fish are so spoiled!