Not entirely true. If angels are raised with small fish, even neons or cardinals, from juvenile they won't eat them as adults. Adult angels, even if they were raised with neons or cardinals, when added to a tank with them will. It's the strangest thing, but I've done it over and over. And believe me when the latter happened, I was like what the heck and had to try raising them together again. Got the same result. No eating them when raised together.