Yes it is possible to feed this, but, they are not alive and don't wiggle. The live food gets hunted down and attacked. Dead food lays on the bottom until they feel hunger pains. Also the decapsulated shrimp as they are called are more expensive. The BBS are not that hard to set up a hatchery, and it is great fun watching the fry go after them!!
There is a number of paste, egg, frozen and other foods for fry, but the greatest survival rates are always using live food.