i recently purchase a 291 gal tank 78x24x36. I currently have a clown knife fish, a Florida gar, one two spot pike and, four johannas on the way. i know i can't put all these together. what i am asking is what route should i take? Should i build my tank around the gar, the pikes or the clown knife and what would be good tankmates for each of the three? the gar is about 6", the Clown " and the pikes are 3"-4". to be a little more specific. Thanks for your suggetions.