He will surely mone the scenery around, small rocks grevel etc. he bites of things all the time (heaters, poerheads, rocks). You name it he bites it.
One word of caution. They are really messy eaters. They will actually swallow the food, chew it and spit it in front of them and then eat it. Fortunately I still have my damsel and chromis from the cycle time who actually stalk there to pick up the pieces he does not eat.
I was really worried when I put the triggers in the tank that my damsels will be food in no time but only picasso chased the chromis for about an hour and that was it. I do not know if they will eventually become food for the triggers but they are doing fine so far.
Here they are; One happy family!!!!