Stay away from live foods - that will only encourage even more aggression towards other fish.
He clearly is not getting enough food - so he's grasping at straws, so to speak, trying to get more food. Especially at this young size, they need a more constant source of food, or frequent feedings, but don't overfeed, though.
As for the guy looking for one - they are very easy to find, even right now, online - there are many vendors who have them, and there are also some on aquabid. But, be smart about housing one.
He clearly is not getting enough food - so he's grasping at straws, so to speak, trying to get more food. Especially at this young size, they need a more constant source of food, or frequent feedings, but don't overfeed, though.
As for the guy looking for one - they are very easy to find, even right now, online - there are many vendors who have them, and there are also some on aquabid. But, be smart about housing one.
