Small african aros are best left to the advanced aquarist. As stated above they are filter feeders so you will need to have a good way to feed them. Some learn to feed of a sponge filter and some will learn to feed of leftovers on the bottom. Should probably be kept alone until larger.
There have been a few members on here with alot of exprience that have not sucsessfully raised them. I myself have yet to give it a try.