Parrots can eat quite easily and are actually quite the pigs. Yours is a dyed parrot and the mouth looks very deformed. I would definitely house this parrot with much more peaceful fish than it's with now. They have no way of defending themselves against aggressive species.
I love leaf fish, but as you've seen, they are highly aggressive. They also eat any fish that fits into their mouths, not exactly good community fish. That's actually the only reason I don't have them.
75: blood parrots, featherfin cat, emperor tetras, turquoise rainbowfish, BN plecos, japanese trapdoor; 46: WCMM, gold inca snails, ghost, bamboo & amano shrimp, kuhli loaches, rummynose & ember tetras, endlers, platies, flame gourami, guppies; 16: pygmy, peppered, loxozonus corys, otos, assassins, RCS ... ~ Research PRIOR to purchase.... ~