
You could remove the other fish and leave the parents in there on their own, it might be worth putting in a couple of your livebearers as dither fish to give the parents something to protect the eggs/fry from.
If you remove the parents as well then place an airstone on low bubble near the eggs to simulate the parents fanning actions.
Getting food that's small enough is the problem as well as being tasty looking to a baby angelfish, I used microworms(available from Biological Supply Houses) which I cultured on top of my tanks.
There are several dried fry foods available now,I don't know if the ZM range of fry foods is available where you are but they work quite well.
I did 10% water changes twice daily once the fry were free swimming and eating.
I made sure the fry had an almost permanent supply of food (microworms stay alive for about 8 hours in the tank water).
The water temp is fine and the eggs will hatch in about 5 days, keep a look out for the little black eyes, they usually hatch quite quick afer the eyes appear.
Don't feed the fry until they are swimming about the tank actively looking for food
