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From what i learned, GBR will take care of their fry and do all the raising, but sometimes they are terrible parents and it will take them a few times untill they get it right, for the most part they should chase off the neons.
rams are notoriously bad parents, if you want to raise them then I suggest setting up a rearing tank. Think about it, rams are very common fish for people to have but you hardly ever see anyone selling them on a hobbyist level.