Males may attack the females to show their dominance, sometimes a little too much (you gotta know when to call it quits and try another day). After the male "squeezes" the eggs out of the female you have to take her out of the tank and leave the rest up to the male. he will keep the eggs in the bubble nest, picking them up with his mouth and putting them back when they fall out. once they hatch, if i remember correctly, you have to take the male out also (he might eat them). i once set up a 55 gallon tank for my sister in law with CO2 tank with delivery setup, proper lighting (not your regular flourescent bulbs), with plants and fish galore. btw, no mechanical filter. all the live plants, gravel (full of bacteria and worms) served as a natural filter. all she had to do was thin out the plants, add evaporated water and do water changes every now and then. it was packed with fish & baby fish everywhere!!! i know in the initial stages of growth they need tiny food, vinegar eels if i recall correctly and just crushed (until its basically a powder) flake food for the later stages.
a 55g set up the way i described would be a great grow out tank or a tank just for the girls, im assuming after a certain point you would have to separate all the males (never raised them to that stage)