Pearsei are a very interesting fish with large appetites and personalities. We recently had friends over for dinner and they have young kids in the 5 to 9 year old category. They are very well behaved and were not hitting the glass or anything but it can be intimidating to the fish to have people right up on the glass like these kids were. The Pearsei and Midas were both front and center interacting and showing no fear. Give it a little time and the fish may mellow a bit.