these fish are egg scatterers and if theres a male present then he will chase her around and they flick off each other to encourage her to release the eggs. the eggs will fall to the gravel or get eaten by the other fish,but its highly unlikely the eggs will ever hatch and if they do the other fish will eat them.
if theres no male then i would asume two females will do the same thing or the eggs will be absorbed back into the body.