Water parameters are within normal ranges. I’ve had this guy for about 2 weeks now. When I first got him he was extremely timid- to this day I have not gotten him to eat anything directly from me. He grazes the rocks all day and occasionally picks up a piece of mysis if it floats by from my general feedings. Haven’t seen him touch any nori. I add vitamins and selcon to all food.
These discoloration patterns showed up about a week ago and I’ve got no idea what it is. They look slightly raised but it’s super hard to tell. He hasn’t been fighting any other tank mates.