You need to let the third wheel go. He will only get in the way and be beat up.
Use this info, Mike is a Angle Guru!! Also check out Angels Plus for breeding supplies and information, good luck.add or subtract to multiply
subtract - find it a new home if you want the fry as the odd fish is now a target and without the distraction the parents keep up with fry better.
add - add more angelfish to share the joy and spread the aggression losing the spawn for sure.