Planted Tank Guru
Join Date: Jul 2010
Location: British Columbia, Canada
If you want them to breed successfully, and you'd really like to raise the fry, it can be a bit tricky but can be done quite successfully.
First you'd need to have another cycled tank ready, where you can place the parents after the spawning, and the other two adult embers.
You mentioned your tank was planted - what kind of substrate do you have ?
If it's larger pieces of gravel that would permit the eggs to drop into small openings in the substrate, that would be good.
I'd suggest you lower the water level in your tank to hust a few inches, no more than 3" or 4" - then when they breed and the male has fertilized the dropping eggs - there is little opportunity for the parents to gobble up the eggs before they drop into crevices of the substrate.
You'd then want to remove the adults to another tank, to allow the eggs to hatch.
I've had good success doing this with a couple of varieties of tetras - except that I used a single layer of marbles in the bottom of the tank, where the eggs could easily drop between, and be completely out of reach of the egg-eating adults.
Your embers obviously like the water conditions in your tank to encourage them to start breeding, so don't change anything besides lowering the water level.
Good luck to you.