You know I read that but he isn't doing anything to control my guppies that are also in the tank 😁
He sometimes eats bladder snails.
I had him with a dwarf gourmai for a year and they did pretty good.
I have found him to be thoroughly chill as long as he has places that other fish won't bother him.
Still be careful with tankmates that fin nip as they can damaged the butterfly's bottom sensory fins.
They almost look like ants 🫠