In mine it is my one spot foxface and everyone knows it. He’s the only big fish in the tank and everyone moves out of his way when they see him coming. Hard to miss him with how chunky he is lol. He’s never shown any agression and whenever there is agression between other fish he puts himself right in the middle of them basically saying stop it. Don’t think I could have asked for a better tank boss. Which fish is the boss of your tank?