I did the same thing halichoeres malenarus a few years ago. They was a little aggression at first, but they settled in. Added 2 females. They were fine for a few years, and the on the females turned. Not sure if it was a Juvi male when I bought it or changed later. After about six months that got aggressive with each other and caused month damage and died. If you see one starting to turn I would take it otherwise good luck.