So it depends on the individual?
What did I need to feed them?
I got a single puffer in a 5g with mystery snails and cherry shrimp. He leaves adults alone but does eat the babies. Ran out of snails to feed him. So hand feed him frozen blood worms with tweezers.
Reason why I hand feed him is to control waste. When I dropped a few in tank he would miss a few. Just easier to control what he eats. Plus funny to watch how he stalks the tweezers.