I love these fish and have kept them for years. They are big, robust fish that become more active over time; they take a while to really acclimate and become bold. I would never keep one in anything less than a 125. Also; I'd get an Australian, rather than an Indo-Pacific specimen---the $ is well worth it. Not only are Aussies much better looking (IMO); they ,like all Australian fish, are well handled and very unlikely to be caught using cyanide----still a problem in areas of the "Indo-Pacific" region. As to temperament, they are not wussy, but seldom bother anything that doesn't bother them first. BTW, LA has a great side-by-side comparison of the two regional Tusks--the difference is obvious. The SWF. Com pic is an Aussie; but they sell the Indo-Pacific fish.