=-) right, can all newbs please do some research before posting, your filling the forum up with bad advice! us old timers get finger ache correcting you!-)
I suggest getting a tape measure and looking at inches and feet and then, learning the max sizes of all your favourite fish, when you do you will likely get a whole set of favourite fish.
This is because you will realise unless your anything short of a million Aire OR want to put an Intex pool in your lounge, they all get too big lol...