Peppered Corys .
that is the corydoras paleatus
They trigger on a heavy water change.
They can be egg eaters so it is a good idea to remove the eggs to another tank or into a container floating on top of the adult tank.
Slight airation and they will hatch between 5-8 days depending on the temp.
first food on 2nd or 3rd day post hatch.
baby brine and microworm.
The will eat other foods as well by one week of age.