I'm not sure if all males are still sterile like they were years ago.Especially with flowerhorn thing, normally i like them as long as they in the tank but not anymore as they are already breeding in Florida...probably from lower grade stocks. And it is nightmare for purists when the hybrids got loose in the wild (or manmade canals).
Therefore i like blood parrot ones better as the males are sterile but then females can breed with other species, lets hope that blood parrot dont get in the canals...wont be surprised if blood parrot already existed in the canals.