New Tank Upcoming?!

[JustuhFish]

I originally was going to get a 20 gallon but decided to get a 55. Im probably geting 1 rainbow shark, 2 pictus catfish, and maybe some silver dollars or some kind of schooler fish that u could recommend.
Ive had these even with a full grown oscar before but maybe that was just luck.

 

[Ninjouzata]

The tank is not large enough for the pictus IMO, plus they prefer bigger groups than 2. HERE is some more info on them.
 
Silver dollars will also outgrow the tank, HERE is more info.
 
Do you like african butterfly fish, leopard ctenopoma, or upside down catfish?