Here to help! Yes we had a breeding pair of Angel fish for years.
No, these eggs will not hatch without a male to fertilize them. GO FIND A MALE in the local store(get two mature fish and wait for two to pair off. Then remove the other fish),quickly!! Clean the tube off of all the eggs. The rest of the fish are fine in the tank it is only the eggs that she is defending. Ghost fish will eat the eggs!!
We had 300 eggs every two weeks. If you want to breed and sell the fish then you will need a few things. We paid for all our fish supplies and dog food by selling quarter sized babies.
Here is what we did. We got a real plant with wide leaves for the "momma" to lay the eggs on and then the Male would fertilize. We then cut the leaf with the eggs and stuck in a 5 gallon tank, weighted down and coated the water with Methylene blue. It an anti-fugal agent to stop the eggs molding. Also, you have to grow live brine shrimp. You buy eggs and put in salt water on a warming tray with a light at one end. A small bubbler also helps...3-4 days you have brine shrimp. When the tails appear from the angle eggs start growing brine shrimp. You have to have two trays going of brine cuz the angel babies will be hungry. Clean the tank with the angle eggs of all Methylene blue,once the eggs have hatched and remove the leaf with any eggs noy hatched. Change the water in the tank regularly and move the fish to a forty gallon tank. No rocks in any of these tanks as it traps too much poo and will kill the fish. Always have water that is very clean and with out containments. We use bleach and let the water sit.
GOOD LUCK and let us know if you get babies.
PM me and send me your email if you want more help!
ALOT OF work but also very rewarding!!