Nearly all fish love bloodworms, it is important to feed them sparingly though. Angels are pigs, & will eat until bloated. Bloodworms, being high in protein, will lead to constipation & bloat. I wouldn't feed them bloodworms more than a few times a week. If you want to feed them everyday, keep some epsom salt handy, it works wonders for constipation. Feed brine shrimp daily as well, the roughage from them helps keep the intestines clean.