I feed mine on the same as the adults get, courgette, shrimp pellets and nutrafin bottom feeder tablets, mine get fed 3 times a day to make sure there is always food for the fry. The angel will more than likely eat them, i had a couple of 40mm swords in my GBA tank to eat the mossie larvae the GBA's were from adult to 1 week and noticed the swords pecking away at them, and angels are piglets