Any info on Australoheros species should be relevant.
They come from Uruguay, and Argentina, maybe as far north as Southern Brazil.
I have only kept Australoheros sp Red Ceibal, but since they are from the same general area, Iwould consider a no heater situation (with winter cool down) housed with other Uruguayan species as tank mates such as Gymnogeophagines, and Crenicichla as cichlids, and Buenos Aires tetras as dithers.
There are also many other tetras, corys, and Plecos from that same area.
You can find half dozen photos on the Cichlid Room Companion web site, and photos of 4 different scitilus location variants on Aqvaterra/Uruguays web site