my boyfriend's palaetus [however you spell it], lay eggs every few weeks, and he only has two so they seem easy.
i have 3 [2 males one femle] juli corys, and they've only laid eggs three times in a year. they seem to be picky.
my albinos, which are albino forms of palaetus or whatever breed all the time, this was this first time i successfully harvested the eggs.
i think bronze and emeralds are easy too, but i could be wrong