What exactly are you going to do with all of your fish who will eventually get too big for your tank? (ex: ghost knife, oscar, channel cat, scats, eels, needlenose)
Why do I love fish? You can't pet them, you can't play with them, you can't teach them tricks, they aren't warm and fuzzy... Why do I love fish? Because every time I stare into their little world I have created for them, every problem I have just floats away....
72 gal Eel tank
90 gal Reef
110 gal "Cube Tank" Amazon Angelfish tank