Ive got a valentini with red shrooms, two types zenia, starburst, yellow polyps, two types of leather etc. In a 55. I feed my valentini shrimp twice a day and the puffers around 2-3 inches. I am always watching him and have heard they can live for a long period of time "20 or so years". I have had the puffer for roughly 6 months like this although I have only seen him puff up once-