I always wanted one but they get big and need a large aguarium. They also can be very picky eaters. Some people say they can cause a tank crash when they die from a toxin they have. But there are little to no reports of this. They are also very had to see for sale. I have never seen one in my LFS and only occasionally online. The yellow box fish are more commonly for sale. I would recommend prestige reef YouTube for more box fish info he’s kept a few over the years.