Hello I am about to stock my 55 gallon aquarium but I am stumped. Im wanting a solo main fish decent sized to be the center of the tank and can't come up with any ideas. After i figure out what its gonna be i plan to add a school or two of compatible fish depending on what i choose and yes I do know they'll need to be similar sized bigger than the biggest fishes mouth. What do you think? And it'd be great if you could let me know some compatible fish with whatever you list too