Maybe I should have clarified that you raise the remaining eggs or the next batch.
I meant, after the fish lay eggs your hand raise all living ones, such as removing the slate after your pair has finished, because not all angelfish are brilliant parents. Hand raising eggs in the same idea of fostering neonatal kittens or puppies, of course you do not raise dead ones but instead work to raise the remaining healthy brood due to lack of parents or other circumstances.
I’m glad to clear it up for you, I’ve bred angels before so if you’d like to make any more comments or have any questions I’d be glad to answer
Itís more keeping aquarium water than actually keeping fish