I found these two youngsters at my lfs, and while I've usually seen them as solitaries, these two were definitely hanging together. I didn't want to break up the set and they're not a huge bioload, so I came away with both---who exhibit interesting behaviour, taking turns feeding, one sitting and watching. They really took notice when I added two commensal shrimp to the tank, one for my watchman and one for the highfins---not that they courted one, but that they perked right up and went to eating fairly confidently once that presence was there. They're quite young, not to breeding age by a long shot, but if I have happened on a pair, I'd sure like to know any other experience with them.