As far as I understand, young pictuses like the company but as they get older, they get territorial and would prefer to live alone. I would not try to introduce a new one to the tank now.
50gal planted - yoyo loaches, BNs, odessa barbs, giant danios
33gal planted - praecox rainbows, gold ram, bolivian rams, sparkling gouramis, licorice gouramis, lots of shrimp
2 x 5gal planted - bettas