your convict are an anomaly, lucky you, if you research you will see they are listed ad one the most aggressive aquarium fish you can buy. As for the parrots/convicts, hybrids can get iffy sometimes you see blood parrots are difficult to breed, yet convicts are extremely easy to breed, and I am not familiar with this hybrid at all so I'm not sure which traits they pick up. If they take on the easy breeding trait of the convicts then yes they most likely will breed with each other if they are the same gender, if different genders then one might breed with the oscar but probably not.