Thank you fishorama, today I did not observe anything that would indicate that the two angels that I mentioned had formed a couple, I also checked the area where they were cleaning the leaves and there were no eggs, just as if nothing had happened, maybe I misinterpreted and I am glad that so Whatever it was, I don't have much intention of raising angels but I must admit that those two are quite attractive and surely there would be very pretty fry.Good luck!
If you want fry move the fertilized eggs out, otherwise they or the new fry will be snacks. The parents may eat them if they feel the fry are threatened too much by the other fish. Parents may also mouth the fry to move them or clean them but they may "forget to spit" . My last angel fry were carefully spit into the filter intake I didn't really want to raise them but it was hard to watch
Or you can move the adults to a breeding tank, wait until they lay eggs or have fry them move the adults back. It may take a couple tries for the pair to get it right, white eggs are infertile, amber/tan eggs are good. Make sure you have tiny fry foods after the first couple days of free swimming. Plan on lots of water changes, the more you do the better!