My pictus is only three inches but would eat like a horse if I let him lol. So far he's eaten everything under an inch long, but now he's started being able to eat whole pellets, so I migh have to move my cories eventually. I'm keeping guppies in with him right now, any fry I can't catch gets gobbled. If I ever manage to get enough guppies that actually breed right I won't try bother trying to catch any of them.
Last I heard the red tailed shark was a bad idea with pictus, at least thats what I was told.