Two oscars two silver dollars ( rescues). A severum. A rope fish and soon to be two Polypterus Senegalus
Silver dollars should be in larger groups. The oscars will grow very large and rule the tank. The two of them may or may not get along with each other, but I don't think they'll be very nice to the severum once they're adults.
I'm not sure if the oscars will harm adult Polypterus, but if they can fit them in their mouths, they'll try to eat the juveniles.
I'm not sure I'd add pictus with the oscars though.