Oh and the only time I ever see my Fahaka hiding from me is after eating. I don't know if they are just vulnerable/less mobile after eating or what the deal is but he doesn't want to be seen after eating... Which is unusual for me since my cichlids (all cichlids?) NEVER stop begging for food unless they are ill...
Otherwise this puffer is either always looking for me or my dogs or when I walk by he comes out of his cave or stops whatever he was doing (he likes to swim around and explore the pvc caves in his tank) and tries really hard to swim through the glass swimming back and forth at the top and bottom of the tank trying to get to me...
Definitely not a hider...very active fish and in my opinion way more socialable and personable than cichlids.... I'm not sure if they are more intelligent (I personally don't think so, but are up there with them) but definitely more personable.
I'd compare them to Groupers... Except puffers are just more lethal...
Also DON'T hand feed an adult fahaka! If you do though (like I plan to), either use tweezers to hold the food or keep a very close eye on the puffer... Not that they will intentially bite you... you just don't want to take the chance... Supposedly an adult Fahaka is powerful enough to bite through steel fish hooks let alone a 18" puffer probably being capable of dismembering a finger let alone taking a chunk out...