Well, I suppose you could consider a blood parrot a 'feeder fish'........if you own a Tiger shovelnose catfish, or something similarily big and piscivorous.
I have yet to see a successfull cross between a severum and CA cichlid. I'll beleive it when I see it! The blood parrot looks to be the male but supposedly many male blood parrots are sterile, so even if this cross could produce offspring (which I have my doubts), I wouldn't get hopes up to high.