I currently have 2 snow white socolofi, 4 yellow labs, and 2 blue zebras. I really want at least one big fish in my tank that can be like the center of attention, but all i know of that gets big are american cichlids! any thoughts or ideas on my situaltion? oh! and it will be a 75gal tank that i'm stocking with sand as the substrate and lava rocks as the decor.