My Foxface is only a so-so cleaner, it will only remove the bigger pieces of macro algae. The little White Cheeked Tang I just put in a couple of weeks ago is a real trooper! It spends the whole day picking at the rock. The max size on them isn't too big, and I think they're too busy to even realize they're in a tank
It's not at all like my Regal Tang that spends it's time patrolling the tank, making sure everything and everyone is in order.