Stars and Stripes puffers get really big. 18" is no joke when you are as round and bulky as a puffer is. Especially if they get spooked or blow up for some reason.
Mine was about that size when he died(stupid apartment manager!) but even cooler markings imho. Kind of a desert cammo. Here are a couple earlier pictures:
and yes, he just sat around on a ledge all day looking at me. Which was AWESOME! That picture was taken from my computer desk so he sat there looking at me all day long while I worked. Always good for a smile when I glance over. I LOVE puffers...they are THE fish that got me in this blasted expensive hobby of wild emotions.
Currently my dogface is only about six or seven inches...but he's starting to lay around more. Less swimming, more hanging out on a ledge.