The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.
Sexing Angels is very very difficult, the best way to know is just see if they pair up and spawn. That's they only 100% way to tell gender that I'm aware of.
If they are fighting a lot, chances are its 2 males.
There is no way anymore to accurately sex Angelfish 100% without seeing their breeding tubes. That shouldn't be happening until the fish are about 8 months old +/- when they become sexually mature.
That said, the fish appear to be on the smaller side so there is no way to make a guess and be better than 50% right. If I were you, I'd wait until you have had the fish at least 5 months ( assuming you bought them as smalls) then try to take a close up picture of the fish. ( It might be me but I can't get a good larger of your pic to view.) There are some tricks that apply "most of the time" but again, 100% accuracy only comes from seeing their tubes.