Got two growouts right now (separated of course - they will violently kill each other). Definitely one of the most personable fish out there. Come right up to the glass, look you in your soul, and make you feed them lol.
These have been mentioned above but I will stress them again. Great filtration is key, keep nitrates low! And hard foods, clams are great. When they get bigger they crush right through the shells. Shrimp works real well too.