I've had one for 20 years. She's every bit of 5 inches long, and the second biggest clown I've ever seen. She has the best personality. I've gone by the rule of never putting in a fish bigger than her into the tank. She's always been friendly to other tank mates. About 3 years ago, I put in a tiny Gold Nugget. I was worried she would eat him because he was about 1/2 an inch long, but they immediately became a pair. He would sleep under her fins and climb up on her back like a horse. They spawned a couple times about 6 months later. We call him her lil' ***** because she herds him back into his place while she swims all over the tank. He's finally gotten his gold color, but he's less than 2 inches long.
She is only aggressive to the food that I put in the tank and the tank scrapper when it's in her area. She did nip me a couple times early on when I would clean the tank, but then I realized she didn't like me putting sand back into her area. When I stopped, we never had another problem. She also rips tentacles off my Ritteri when he decides to go on an adventure and move around the tank. I never could get her to be hosted by my Ritteri or any LPS, but she seems happy sleeping on the floor.
She's the pet I've had the longest, and every upgrade to my tank is for her happiness.