id prefer a tank with perch rather than a pike. i like pike dont get me wrong... but i think a monster tank with 2-3 perch, each a foot long would look better than the same tank with a single pike. theyre ambush predators too, so they probably wouldnt move much, but it may take to aquarium life better than we think, quickly learning who feeds them, so they may become active in aquaria. instead of lying in wait for their next meal.
perch also have the personallity of oscars too. so they could be trained to do tricks if you like that sort of thing. they are also a more active fish. theyre shy at first, but quickly open up...