Rob,
What is your current stocklist?
I am particularly interested in the P. afer behaviour. There is a very nice golden spotted one in my LFS (~7") and he keeps smiling at me everytime I go there...
However, most of what I read on their aggressiveness and being a sob "night killing machine" makes me hesitate.
I would put it in my "primitive tank", which is an oddly shapped 240g (60x40x24") where I keep 3 FLGars, 4 polypterus (endli, ornate, lap and senegal) and one rope fish.
From what I´ve been reading it would be ok with the polys, but I fear for the gars..