Well, when I first feed them, he wants to try to chase everyone away from the food, but he figures out pretty quick that he can't actually be in two places at once and he starts eating.
My little Panda oranda has started standing up to him and when the black moor chases my pearlscale, the panda will start chasing him.
It helps that the panda has doubled in size since I got him . . . maybe even a little more than doubled, because they've all doubled in size, but the panda had done some catching up.