I had 4 of those they did fine. Kept them with 5 silver dollars and red swordtails and black gravel with actinic lighting. Tank was awesome! ha!
Its fun hearing their "growl" when they scuffle for food.
Just noticed your sig though. You have them with cories? Are they small enough to eat? If the pictus eat them (if they are small enough they will try at night, trust me) it will kill the cory and the pictus both.