They're nothing like tough enough to go in with africans or blood parrots. They're from south american, acid to neutral pH, low hardness, so think S American community - angels, discus, tetras, pencilfish, hatchets, L number cats.... Cories are ok if there's a bit of space. Rams might work if there's enough space (3 feet and up)- both fish are 'peaceful' but actively territorial