When i got my niger trigger he did the SAME THING. i thought something was wrong with him or maybe i didnt acclimate him enough. But come to find out. triggers LOVE to wedge themseleves between the rocks and just sit there. thats actually how they came about getting there name. As for the scratches. triggers are very sturdy fish they move so quickly and harshley that they hurt themselve quite often. Mine comes up all the time with white scratches on his face around his eyes and his sides. thats normal. i wouldnt worry too much about him fighting with the damsel. if the trigger wanted to kill the damsel he would have by now lol. their probebly just trying to establish whos in charge
-kat