Bicolor angel victimizes 2 clownfish

Bought 2 clownfish (percula, small size), and a Bicolor angel, at the same time. I was at first worried that the blue damsels would attack the small clowns, but instead noticed the Bicolor was nipping them at times.

I thought this would pass, but it didn't... few days later, the clowns' tails were bitten off, and they died soon after.

I've never had this problem before with a Bicolor, and there's not issues with the damsels and it... now I don't know what fish it can get along with...