It depends on the fish. Some Blood Parrots show no aggression, and others show more. I asked the someone at my lfs if he saw any aggression from her, and he said the most she did was chase away the JD a couple times.I've always thought these were really aggressive. I guess they aren't?
When I first put her in the tank she was a little aggressive, but now she's the most well behaved fish I have.

