Crush up flake food to a powder to feed them or feed brine shrimp other stuff for fry at store . Also you can get yolk out of hard boiled egg then crush it up and feed like get a toothpick dip it in water then food the Water again. Their parents will eat them so watch out! How many do you have? Put nylon or sponge over filter tube so they don't get sucked in.take them 2 weeks around there till they won't get eaten. Make a lot of hiding places