Its better to get bigger ones like 5 inches onwards if its your first time handling this type of fish. The egg sack ones are very fragile and weak, factor in stress from transportation and shipping time and you will probably get a dead aro when u reach home. Only if you have experience and are very confident that you can raise it, then go for it as they are cheap. But i would still wait a few weeks after they arrive at the LFS before i go buy it.