breeding cons

[bubbles12003]

i was doing some cleaning in the tank this morn, i found a bunch of eggs. the last time i found eggs they either hatched and eaten or just disapeared . my tank is overstocked i was wondering if i put a seperator just for a bit untill they hatch, would it really harm my other fish even if the are crouded
hear's a pic (still dirty, but my fish won't let me clean)

 

[bubbles12003]

here's a closer pic of my pair

 

[rsz]

my fish are a bit overcrowded, but they all do fine